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NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-1 APPENDIX C SITE INVENTORY TABLE C-1. Master Site Inventory Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes AK01 AK Anchorage Anchorage Southport Dr/Maritime Loop/Washington Ave Urban 4 1 AR01 AR Little Rock Pulaski 36th St/Romine Road/West Road Urban 4 1 AZ01 AZ Phoenix Maricopa I-17 NB Ramps/Happy Valley Road Suburban 4 2 AZ02 AZ Phoenix Maricopa I-17 SB Ramps/Happy Valley Road Suburban 4 2 CA01 CA Arcata Humboldt Samoa Blvd/Buttermilk Ln Urban 4 1 CA02 CA Arcata Humboldt Samoa Blvd/Union St Urban 4 1 CA03 CA Arcata Humboldt West End Rd/Spear Ave/St. Louis Rd Urban 3 1 CA04 CA Calabasas Los Angeles Parkway Calabasas/Camino Portal Suburban 4 1 CA05 CA Davis Yolo 5th St/Cantrill Dr Urban 3 1 CA06 CA Davis Yolo Anderson Rd/Alvarado Ave Urban 4 1 CA07 CA Davis Yolo Moore Blvd/Rockwell Dr Urban 3 1 CA08 CA Davis Yolo Moore Blvd/Wright Blvd Urban 3 1 CA09 CA Davis Yolo Shasta Dr./Olympic Pl. Urban 3 1 CA10 CA Long Beach Los Angeles Hwy 1/Hwy 19/Los Coyotes Diagonal Urban 4 3 CA11 CA Modesto Stanislaus La Loma/James St./G St. Urban 5 1 CA12 CA Modesto Stanislaus Chandon Dr./Calero Dr. Suburban 4 1 CA13 CA Modesto Stanislaus Bowen Ave./Fremont Ave. Suburban 4 1 CA14 CA Modesto Stanislaus Bowen Ave./Phelps Ave. Suburban 3 1 CA15 CA Modesto Stanislaus Lifescapes Dr./Grecian Ave. Suburban 3 1 CA16 CA Santa Barbara Santa Barbara Alameda/Montecito/Salinas/Syc Cyn (5 pts Intx) Urban 5 1 CA17 CA Santa Barbara Santa Barbara Milpas St/US 101 NB Ramps/Carpinteria St Urban 5 2 CA18 CA Truckee Nevada Donner Pass Rd/ I-80 Ramps Urban 3 1 CA19 CA Woodland Yolo Gum Ave/Bourn Dr Urban 4 1 CA20 CA Sacramento Sacramento San Juan Rd/Azevedo Dr Suburban 4 1 CA21 CA Modesto Stanislaus Sylvan Ave/Roselle Ave Suburban 4 1 CA22 CA Modesto Stanislaus E Orangeburg Ave/Rose Ave Suburban 4 1 CA23 CA Modesto Stanislaus W Rumble Rd/Carver Rd Urban 4 1 CO01 CO Eagle Eagle SH-6/I-70 spur/Eby Creek Rd Rural 4 1 CO02 CO Golden Jefferson South Golden Road/Johnson Rd/16th Street Urban 4 2 CO03 CO Golden Jefferson South Golden Road/Utah St. Urban 4 2 CO04 CO Aspen Pitkin SH 82/Maroon Crk/Castle Crk Suburban 4 2 CO05 CO Aurora Arapahoe Lowry Blvd/Fremont Dr./Rampart Way Suburban 4 2 CO06 CO Avon Eagle Avon Rd./Beaver Creek Blvd. Urban 4 3 CO07 CO Avon Eagle Avon Rd./Benchmark Road Urban 4 2 CO08 CO Avon Eagle Avon Rd./I-70 Eastbound Ramp Urban 4 2 CO09 CO Avon Eagle Avon Rd./I-70 Westbound Ramp Urban 4 2 CO10 CO Avon Eagle Avon Rd./U.S. Hwy 6 Urban 4 2 CO11 CO Bayfield La Plata CR 501/Bayfield Center Dr Suburban 3 1 CO12 CO Boulder Boulder Arapahoe Ave/4th St Suburban 3 1 CO13 CO Boulder Boulder Arapahoe Ave/5th St Suburban 3 1 CO14 CO Boulder Boulder Balsam Ave/14th St Urban 4 1 CO15 CO Boulder Boulder Balsam Ave/15th St Urban 4 1 CO16 CO Boulder Boulder Evergreen Ave/9th St Urban 4 1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-2 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes CO17 CO Boulder Boulder Kings Ridge Blvd/Edison Ave Urban 3 1 CO18 CO Boulder Boulder Kings Ridge Blvd/Franklin Drive Urban 4 1 CO19 CO Boulder Boulder Maxwell Ave/6th St Urban 4 1 CO20 CO Boulder Boulder Pearl Street/4th St Suburban 4 1 CO21 CO Boulder Boulder Pearl Street/Mid-Block Suburban 2 1 CO22 CO Boulder Boulder Pine St/15th St Suburban 4 1 CO23 CO Boulder Boulder Pine St/17th St Suburban 4 1 CO24 CO Boulder Boulder St Johns Ave/New Haven Ct, Hamton Circle Suburban 4 1 CO25 CO Colorado Springs El Paso Beech Ave/1st St Suburban 4 1 CO26 CO Colorado Springs El Paso Chapel Hills Dr./Divot Trl Suburban 3 2 CO27 CO Colorado Springs El Paso Chapel Hills Dr./Graycroft Suburban 4 2 CO28 CO Colorado Springs El Paso E.Cheyanne Mountain Blvd/Springmeadow Dr Suburban 4 CO29 CO Colorado Springs El Paso Lake Avenue/Lake Circle Suburban 4 1 CO30 CO Colorado Springs El Paso Lake Avenue/Berthie Circle Suburban 4 1 CO31 CO Colorado Springs El Paso Lake Avenue/Old Broadmoor Rd. Suburban 4 1 CO32 CO Denver Denver Lowry Blvd/Unita Way Urban 3 1 CO33 CO Denver Denver Lowry Blvd/Yosemite St Suburban 3 2 CO34 CO Denver Denver Unita Way/6th Ave. 3 1 CO35 CO Frisco Summit I-70 Ramps N/SH 9 Suburban 5 1 CO36 CO Golden Jefferson Jefferson County Parkway/Civic Center Urban 4 1 CO37 CO Golden Jefferson South Golden Road/ Lunnanhaus Urban 4 2 CO38 CO Golden Jefferson South Golden Road/ Ulysses St. Urban 4 1 CO39 CO Grand Junction Mesa Horizon Drive/12th Suburban 4 1 CO40 CO Lakewood Jefferson Allison Parkway/Civic Center Urban 5 1 CO41 CO Lakewood Jefferson S. Allison Parkway/W. Virginia Ave. Urban 5 1 CO42 CO Loveland Larimer Rocky Mountain Ave/Fox Trail Urban 4 2 CO43 CO Loveland Larimer Rocky Mountain Ave/McWinney Urban 4 2 CO44 CO Nederland Boulder SH 72/ SH-119, SH 72, 2nd, Bridge Urban 5 1 CO45 CO New Castle Garfield Castle Valley Blvd/Pyramid St. Suburban 3 1 CO46 CO New Castle Garfield Castle Valley Blvd/TBD Suburban 2 1 CO47 CO Northglenn Adams Melody/Kennedy Suburban 4 2 CO48 CO Superior Boulder 5th Ave./Center Drive Suburban 4 2 CO49 CO Vail Eagle Chamonix Rd/I-70 EB Ramps/South Frontage Rd Suburban 6 2 CO50 CO Vail Eagle Chamonix Rd/I-70 WB Ramps/North Frontage Rd Suburban 5 2 CO51 CO Vail Eagle Vail Rd/I-70 EB Ramps/South Frontage Rd Suburban 6 3 CO52 CO Vail Eagle Vail Rd/I-70 WB Ramps/North Frontage Rd/Spraddle Cr. Rd Suburban 5 2 CO53 CO Westminster Adams Promenade Dr South/Mid-Block Suburban 2 1 CT01 CT Killingworth Middlesex Rte 80/Rte 81 Rural 4 1 CT02 CT New London New London Pequot Ave/Willets Ave/Shaw St/Howard St Urban 4 1 CT03 CT Willimantic Tolland Eastern Rd/unnamed driveway (ECSU campus) Suburban 3 1 CT04 CT North Stonington New London Rte 2/Rte 184 Urban 4 1 FL01 FL Amelia Island Nassau SR AIA/Amelia Island Plantation Suburban 4 1 FL02 FL Boca Raton Palm Beach Cain Blvd/Boca Raton Dr Suburban 4 1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-3 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes FL03 FL Boca Raton Palm Beach SW 12th Ave/SW 18th St Urban 4 1 FL04 FL Boynton Beach Palm Beach Hagen Ranch Rd/Charleston Shores Blvd Suburban 4 1 FL05 FL Boynton Beach Palm Beach Hagen Ranch Rd/Gateway Blvd Suburban 4 2 FL06 FL Boynton Beach Palm Beach Hagen Ranch Rd/Le Chalet Blvd Suburban 4 1 FL07 FL Boynton Beach Palm Beach Lake Ida Rd/Via Flora Dr Suburban 4 1 FL08 FL Boynton Beach Palm Beach Hagen Ranch Rd/Livomo St. Suburban 4 1 FL09 FL Bradenton Beach Manatee SR 789/Bridge St Suburban 3 1 FL10 FL Clearwater Beach Pinellas Acacia/Mandalay Ave. Urban 4 1 FL11 FL Clearwater Beach Pinellas SR 60 (Memorial Causeway)/Coronado Dr (SR 699)/Mandalay Ave/Poinsettia Ave (Gateway Roundabout) Urban 5 2 FL12 FL Coral Gables Miami-Dade Sunset Dr (SW 72nd St)/Lejune Rd (SW 42nd Ave)/Cocoplum Rd Urban 4 1 FL13 FL Fort Pierce St. Lucie Ave. A/N. Indian River Dr. Urban 4 1 FL14 FL Ft. Walton Beach Okaloosa Hollywood Blvd/Doolittle Blvd Urban 3 1 FL15 FL Gainesville Alachua SE 7th Street/SE 4th Avenue Urban 4 1 FL16 FL Lake Worth Palm Beach Lakeworth Ave (SR 802)/South A Street Urban 4 2 FL17 FL Naples Collier 7th St N/11th Ave N Urban 4 1 FL18 FL Naples Collier 7th St N/12th Ave N Urban 4 1 FL19 FL Naples Collier 7th St N/3rd Ave N Urban 4 1 FL20 FL Naples Collier 7th St N/7th Ave N Urban 4 1 FL21 FL Naples Collier 8th St S/12th Ave S Urban 4 1 FL22 FL Port St. Lucie St. Lucie SE Pine Valley St./SE Westmoreland Suburban 4 1 FL23 FL Stuart Martin Federal Hwy(US 1)/SR 76/SR A1A Urban 4 1 FL24 FL Stuart Martin N. Colorado Ave/E. Osceola St Urban 4 1 FL25 FL Tallahassee Leon Killarney Way/Shamrock Dr Suburban 3 1 FL26 FL Tallahassee Leon Sutor Rd/Old Sutor Rd Suburban 3 1 FL27 FL Tampa Hillsborough North Blvd/Country Club Urban 4 1 FL28 FL Tavares Lake Main St/Disston Ave/Lake Dora Dr/ Railroad Tracks Urban 4 1 FL29 FL Ybor City Hillsborough 13th St/4th Ave Urban 3 1 IN01 IN Bloomington Monroe High St/Winslow Rd/Rogers Rd 4 1 IN02 IN Carmel Hamilton Hazel Dell/126th St. Urban 4 1 IN03 IN Carmel Hamilton Hazel Dell/131st St. Urban 4 1 IN04 IN Fort Wayne Allen Adams Center/Marion Center Rd Suburban 5 1 IN05 IN Indianapolis Marion Monument Cir. (Market/Meridian) Urban 4 2 KS01 KS Olathe Johnson Sheridan St./Rogers Rd Urban 4 2 KS02 KS Hutchinson Reno 23rd Ave./Severence St. Urban 4 1 KS03 KS Lawrence Douglas 24th Place/Crossgate Dr Suburban 3 1 KS04 KS Lawrence Douglas 24th Place/Inverness Dr Suburban 4 1 KS05 KS Lawrence Douglas Monterey Way/Harvard Rd Suburban 3 1 KS06 KS Lawrence Douglas Sunflower Park Pl./Inverness Dr. Suburban 3 1 KS07 KS Lawrence Douglas West Campus Rd/Jayhawk Blvd/Cresent Rd Suburban 3 1 KS08 KS Lenexa Johnson Montecello Rd/Prairie Star Parkway Suburban 4 2 KS09 KS Manhattan Riley Candlewood Dr/Gary Avenue Suburban 4 1 KS10 KS Manhattan Riley Kimball Ave/Grand Mere Parkway Suburban 3 1 KS11 KS Newton Harvey I-135 Ramps/Broadway St. Suburban 4 1 KS12 KS Newton Harvey I-135 Ramps/First St. Suburban 4 1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-4 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes KS13 KS Olathe Johnson Sheridan St./Clairborne Rd. Urban 4 1 KS14 KS Olathe Johnson Sheridan St./Ridgeview Rd Urban 4 1 KS15 KS Overland Park Johnson 110th St./Lamar Ave. Suburban 4 2 KS16 KS Paola Miami K-68/Old Kansas City Rd/Hedge Lane Rural 5 1 KS17 KS Topeka Shawnee I-70 EB Ramps/Rice Rd/Cyprus Dr Urban 4 2 KS18 KS Topeka Shawnee I-70 WB Ramps/Rice Rd/Sycamore Dr Urban 4 2 KS19 KS Topeka Shawnee SW 29th St/Urish Rd Suburban 4 1 KS20 KS Overland Park Johnson W 141st St/Bluejacket St Suburban 4 1 MA01 MA Duxbury Plymouth Lincoln St./Congress St. Suburban 4 1 MD01 MD Bel Air Harford Tollgate Rd./Marketplace Dr. Suburban 3 1 MD02 MD Leeds Cecil MD 213/Leeds Rd/Elk Mills Rd (Lanzi Circle) Rural 4 1 MD03 MD Jarrettsville (North Harford) Harford MD 24/MD 165 Rural 4 1 MD04 MD (unincorporated) Baltimore MD 139 (Charles St.)/Bellona Ave Urban 4 2 MD05 MD Towson Baltimore MD 45/MD 146/Joppa Rd Urban 5 2 MD06 MD Lothian Anne Arundel MD 2/MD 408/MD 422 Rural 4 1 MD07 MD Taneytown Carroll MD 140/MD 832/Antrim Blvd Suburban 4 1 MD08 MD Annapolis Anne Arundel MD 450/Spa Rd./Taylor Ave (Annapolis Gateway) Urban 4 2 MD09 MD Hanover Anne Arundel MD 295 NB Ramps/Arundel Mills Blvd Suburban 4 MD10 MD Hanover Anne Arundel MD 295 SB Ramps/Arundel Mills Blvd Suburban 3 MD11 MD (unincorporated) Baltimore MD 372/Hilltop Circle (UMBC) Urban 4 1 MD12 MD Bel Air Harford MD 7/Holly Oaks Drive Suburban 3 1 MD13 MD Brunswick Frederick MD 17/A St/B St/Maryland Ave Urban 5 1 MD14 MD Cearfoss (Hagerstown) Washington MD 63/MD 58/Cearfoss Pike Rural 4 1 MD15 MD Ellicott City Howard MD 100 EB Ramps/MD 103 Suburban 4 1 MD16 MD Ellicott City Howard MD 100 WB Ramps/MD 103 Suburban 4 1 MD17 MD Ellicott City Howard MD 100 WB Ramps/MD 104 Suburban 4 2 MD18 MD Ellicott City Howard MD 100 WB Ramps/Snowden River Pkwy Suburban 4 1 MD19 MD Federalsburg Caroline MD 307/MD 313/MD 318 Rural 4 1 MD20 MD Jessup Howard MD 32 Ramps/Guilford Road Suburban 3 1 MD21 MD Fort Washington Prince Georges Ft. Washington Rd. Suburban 4 1 MD22 MD Frederick Frederick MD 80/Sugarloaf Pkwy Rural 4 2 MD23 MD Gaithersburg Montgomery Longdraft Rd./Kentlands Suburban 4 2 MD24 MD Greenbelt Prince Georges Hanover Pkwy/Schrom Hills Park Suburban 4 1 MD25 MD Lisbon Howard MD 94/MD144 Rural 4 1 MD26 MD Lisbon Howard MD 94/Old Frederick Rd Rural 4 1 MD27 MD Millington Kent US 301 NB Ramps/MD 291 Rural 4 1 MD28 MD Millington Kent US 301 SB Ramps/MD 291 Rural 4 1 MD29 MD Mount Aetna Washington MD 66 (Mapleville Rd)/Mount Aetna Rd Suburban 4 1 MD30 MD Mount Rainier Prince Georges US 1/Perry St/34th St Urban 6 2 MD31 MD Oak Grove (Kettering) Prince Georges MD 193/Oak Grove Rd Urban 3 1 MD32 MD Rising Sun Cecil MD 273/MD 276 Rural 4 1 MD33 MD Rosemont Frederick MD 17/MD 180 Rural 4 1 MD34 MD Scaggsville Howard US 29 NB Ramps/MD 216 Suburban 4 2 MD35 MD Scaggsville Howard US 29 SB Ramps/MD 216 Suburban 4 2 MD36 MD Scaggsville Howard US 29 NB Ramps/Hopkins-Gorman Road Suburban 4 2
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-5 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes MD37 MD Scaggsville Howard US 29 SB Ramps/Hopkins-Gorman Road Suburban 4 2 MD38 MD Stevensville (Castle Marina) Queen Annes MD 18/Castle Marina Rd Suburban 4 1 MD39 MD Temple Hills Prince Georges MD 637/Good Hope Ave. Suburban 4 1 MD40 MD Temple Hills Prince Georges MD 637/Oxon Run Dr. Suburban 4 1 ME01 ME Gorham Cumberland US 202/State Route 237 Urban 4 1 MI01 MI Okemos Ingham Hamilton Rd/Marsh Rd Suburban 3 2 MI02 MI Dimondale Eaton East Rd/Creyts Rd (mini-roundabout) Suburban 3 1 MI03 MI East Lansing Ingham Bogue Street/Shaw Lane Urban 4 2 MI04 MI Rochester Hills Oakland Tienken Rd/Sheldon Rd Suburban 4 1 MI05 MI Rochester Oakland Tienken Rd/Runyon Rd/Washington Rd Suburban 4 1 MN01 MN Medford Steele I-35/CR 12 Suburban 4 2 MO01 MO Columbia Boone Business Loop/I-70 Suburban 5 1 MO02 MO Parkville Platte MO 45 (Tom Watson Pkwy)/National Dr Suburban 4 1 MO03 MO Town & Country St. Louis MO 141 Ramps/Woods Mill Rd Suburban 3 1 MS01 MS Jackson Rankin MS 475/Airport Rd/Old Brandon Rd Suburban 4 1 NC01 NC Advance Davie I-40 EB Ramps/Hwy 801 Suburban 3 1 NC02 NC Clemmons Forsyth Fraternity Church Rd/Hope Church Rd Suburban 3 1 NC03 NC Clemmons Forsyth Styers Ferry Rd./Utility Dr (River Ridge Roundabout) Suburban 4 1 NC04 NC Lewisville Forsyth US 421 SB Ramp/Williams Rd Suburban 3 1 NE01 NE Seward Seward 7th St, 6th Av, 8th Av. Suburban 3 1 NE02 NE Blair Washington NE 133/US 30 3 1 NH01 NH Nashua Hillsborough Coburn Ave./Chuck Drudging Dr. 4 1 NJ01 NJ Belmar Monmouth 10th Ave/B St Suburban 4 1 NJ02 NJ Belmar Monmouth 10th Ave/D St Suburban 4 1 NJ03 NJ Maplewood Essex Midland Blvd/Highland Blvd Suburban 4 1 NJ04 NJ Maplewood Essex Midland Blvd/Norfolk Ave Suburban 4 1 NJ05 NJ Princeton Mercer Faculty Rd/Elm Dr Urban 3 1 NJ06 NJ Rutherford Bergen Park Ave/Erie Ave Suburban 3 1 NJ07 NJ Southampton Burlington Red Lion Circle Suburban 4 1 NJ08 NJ Summit Union Union Place/Beechwood Rd Suburban 3 1 NJ09 NJ Westfield Union NJ 28/East Broad St. (Westfield Circle) Urban 3 2 NV01 NV Las Vegas Clark Hills Center Dr./Village Center Cir./Meadow Hills Dr. Suburban 4 2 NV02 NV Las Vegas Clark Town Cen. Dr/Hualapai Way/Far Hills Ave. Suburban 4 3 NV03 NV Las Vegas Clark Town Center Dr./Village Center Cir./Library Hills Dr. Suburban 4 2 NV04 NV Las Vegas Clark Town Cen./Canyon Run Dr/Banburry Cross Dr Suburban 4 3 NV05 NV Carson City Carson City 5th St/Edmonds Rural 4 1 NV06 NV Carson City Carson City US 395 NB Ramp/Arrowhead/Imus Suburban 4 1 NV07 NV Carson City Carson City US 395 SB Ramp/Arrowhead Suburban 3 1 NV08 NV Las Vegas Clark Carey Ave/Belmont St Urban 4 1 NV09 NV Las Vegas Clark Carey Ave/Hamilton St Urban 4 2 NV10 NV Las Vegas Clark Carey Ave/Revere St Urban 4 2 NV11 NV Las Vegas Clark Desert Primrose Ln/Desert Marigold Ln/Blue Willow Suburban 4 2 NV12 NV Las Vegas Clark Desert Primrose Ln/Spotted Leaf Ln/Pavillion Cen. Dr Suburban 3 2
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-6 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes NV13 NV Las Vegas Clark Gate/Longspur Suburban 4 2 NV14 NV Las Vegas Clark Havenwood Ave/Desert Marigold Ln/Navajo Willow Ln Suburban 4 2 NV15 NV Las Vegas Clark Havenwood Ave/Spotted Leaf Ln/Golden Willow Suburban 4 1 NV16 NV Las Vegas Clark Lake South/Crystal Water Way Suburban 4 1 NV17 NV Las Vegas Clark Thornbury/Enclave Suburban 3 1 NV18 NV Las Vegas Clark Hills Drive/Longspur Suburban 3 2 NY01 NY Erwin (Painted Post) Stueben Robert Dann/Science Center Suburban 4 2 NY02 NY Kingston Ulster I-587/Rt 28/I-87/Washington Ave Rural 4 2 NY03 NY North Haven Suffolk Tyndall Road/Route 114 Suburban 4 1 NY04 NY Greenwich Washington Rte 29/Rte 40 Suburban 3 NY05 NY Guilderland Albany Rte 155/Rte 85A/Rte 20 Suburban 3 OR01 OR Bend Deschutes Colorado Ave/Simpson Dr Urban 4 1 OR02 OR Astoria Clastop Hwy 101/Hwy 202 (Nehalem Hwy) Urban 3 2 OR03 OR Bend Deschutes 8th St/Franklin Ave/9th St. Urban 4 1 OR04 OR Bend Deschutes Century Dr/Colorado Ave/Chandler Ave Urban 4 1 OR05 OR Bend Deschutes Century Dr/Mt. Washington Dr./Reed Market Rd. Suburban 4 1 OR06 OR Bend Deschutes Mt. Washington Dr/NW Crossing Dr Suburban 4 1 OR07 OR Bend Deschutes Mt. Washington Dr/Shevlin Park Rd. Suburban 4 1 OR08 OR Bend Deschutes Reed Market Rd./Mt Bachelor Dr Suburban 4 1 OR09 OR Bend Deschutes Century Dr./14th St./Simpson Ave. Urban 4 1 OR10 OR Bend Deschutes 14th St./Galveston Ave. Urban 4 1 OR11 OR Bend Deschutes Awbrey Rd./Sonora Dr. Suburban 3 1 OR12 OR Bend Deschutes Bond St./Reed Market Rd. Suburban 3 1 OR13 OR Bend Deschutes Industrial Way/Wall St. Urban 3 1 OR14 OR Bend Deschutes Industrial Way/Bond St. Urban 3 1 OR15 OR Eugene Lane Barger Dr/Green Hill Rd Suburban 3 1 OR16 OR Eugene Lane N. Terry St/ Roosevelt Blvd Urban 3 1 OR17 OR Portland Multnomah NE Lombard St/N Perimeter Rd (PDX airport) Suburban 4 1 OR18 OR Portland Multnomah SW Terwilliger Rd/SW Palater Rd Suburban 4 1 OR19 OR Sherwood Washington NE Oregon St./SW Murdock Rd. Suburban 3 1 OR20 OR Springfield Lane Maple Island Rd./Facility Entrance Suburban 3 1 OR21 OR Springfield Lane Maple Island Rd./International Way Suburban 4 1 OR22 OR Springfield Lane Maple Island Rd/Game Farm Rd Suburban 3 1 OR23 OR Springfield Lane Thurston/58th St Urban 4 1 SC01 SC Hilton Head Beaufort Whooping Crane Way/Main St Suburban 4 1 TX01 TX Addison Dallas Mildred St./Quorum Dr Urban 4 2 UT01 UT Orem Utah 1200 South/400 West Urban 4 2 UT02 UT Orem Utah 2000 South/Sandhill Rd Urban 4 2 UT03 UT Draper Salt Lake Vestry Rd/Rocky Mouth Ln Suburban 4 1 UT04 UT Draper Salt Lake 300 East/12200 South Suburban 3 1 UT05 UT Orem Utah E 850 North/N Palisade Dr Suburban 3 1 UT06 UT Orem Utah Palisade Drive/Cascade Pkwy 3 1 UT07 UT Orem Utah 400 South/Lindon Park Circle (600 West) 4 2 UT08 UT Orem Utah Utah Valley State College Suburban 4 2 UT09 UT Park City Summit RT 224 (Deer Valley Dr.)/Heber Ave/Marsac Ave Suburban 4 2 UT10 UT Provo Utah 1730 North/1740 West Suburban 4 1 UT11 UT Provo Utah 1720 North/550 West Urban 4 1 UT12 UT Provo Utah 3700 North/300 West Suburban 3 1 UT13 UT Provo Utah 700 East/Center Urban 4 1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-7 Site ID State City County/ Borough Intersection Setting No. of Legs No. of Lanes UT14 UT Provo Utah 1700 North/1500 West Suburban 4 1 UT15 UT Provo Utah 300 North/Seven Peaks Blvd Suburban 4 2 UT16 UT Provo Utah 5000 North/Edgewood Suburban 4 1 UT17 UT Provo Utah 920 South/200 West Suburban 4 1 UT18 UT Provo Utah Veterans Parkway/Edgewood (Shops at Riverwoods) Suburban 3 1 UT19 UT Summit Summit Powderwood Dr/Factory Outlet Parking Suburban 3 1 UT20 UT Summit Summit Kilby Road/Factory Outlet Parking Suburban 3 2 UT21 UT Draper Salt Lake 1300 East/Pioneer Rd Suburban 4 1 VT01 VT Manchester Bennington Rte 7A/Equinox(Grand Union) Suburban 4 1 VT02 VT Montpelier Washington Main St./Spring St (Keck Circle) Urban 3 1 VT03 VT Brattleboro Windham RT 9/RT 5 Suburban 4 2 WA01 WA Gig Harbor Pierce SR 16 SB Ramp/Borgen Blvd. Suburban 4 1 WA02 WA Gig Harbor Pierce Borgen Blvd/51st Suburban 4 1 WA03 WA Bainbridge Island Kitsap High School Rd/Madison Ave. Urban 4 1 WA04 WA Port Orchard Kitsap Mile Hill Dr. (Hwy 166)/Bethel Ave Suburban 3 1 WA05 WA Sammamish King NE Inglewood Hill/216th Ave NE Suburban 4 1 WA06 WA Monroe Snohomish SR 522 EB Ramps/W. Main St.(164th St SE)/Tester Rd Suburban 5 2 WA07 WA Lacey Thurston I-5 NB Ramp/Quinault Dr/Galaxy Dr Suburban 4 1 WA08 WA Kennewick Benton 27th Ave/Union St/Union Loop Rd Urban 4 1 WA09 WA Gig Harbor Pierce SR 16 NB Ramps/Burnham Dr./Borgen Blvd. Urban 6 2 WA10 WA Federal Way King Weyerhauser Way/33rd Pl./32nd Dr. S. Suburban 3 2 WA11 WA Kennewick Benton 12th Ave./Irving St. Urban 4 1 WA12 WA Kennewick Benton Columbia Park Dr. #1 Suburban 3 1 WA13 WA Kennewick Benton Columbia Park Dr. #2 Suburban 3 1 WA14 WA Kent King S.216th St/42nd Ave S/40th Place S Suburban 4 1 WA15 WA Lacey Thurston Marvin Rd/Britton Pkwy./Willamette Drive Suburban 4 2 WA16 WA Lacey Thurston College St. SE/45th Ave. SE Suburban 4 2 WA17 WA Lacey Thurston Marvin Rd./Hawk Prairie Rd. Suburban 4 1 WA18 WA Moses Lake Grant Yonezawa Blvd./Division St./Belmont Ave. Suburban 4 1 WA19 WA Moses Lake Grant Yonezawa Blvd./Monroe St. (future) Suburban 4 1 WA20 WA Moses Lake Grant Yonezawa Blvd./Clover Dr. Suburban 4 1 WA21 WA Sammamish King W. Lake Sammamish Parkway SE/Lakemont Blvd SE Urban 4 1 WA22 WA University Place Pierce Grandview Dr/56th St W Suburban 3 1 WA23 WA University Place Pierce Grandview Dr/62nd Court W/Park Entrance Suburban 4 1 WA24 WA University Place Pierce Grandview Dr/Bristonwood Dr/48th St W Suburban 4 1 WA25 WA University Place Pierce Grandview Dr/Cirque Dr Suburban 3 1 WA26 WA University Place Pierce Grandview Dr/Olympic Blvd Suburban 4 1 WA27 WA University Place Pierce 56th Ave./Alameda Ave. W/Cirque Dr. Suburban 4 1 WA28 WA Lacey Thurston Marvin Rd./TBD Commercial Access Suburban 2 2 WA29 WA Bellevue King SR 90/West Lake Sammamish Suburban 4 1 WI01 WI Howard Brown Lineville Rd (CTH M)/Cardinal Ln Suburban 4 1 WI02 WI Howard Brown Lineville Rd (CTHM)/Rockwell Rd Suburban 3 1 WI03 WI Milwaukee Milwaukee S 6th St/W Virginia St Urban 4 1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-8 Site Summary The following tables and figures show the fields of view for a sample of sites from which video was collected. Each site included in the following sample has an overhead view (designated with a âVâ) and several views of each leg (designated by general direction, e.g., âEâ, âWâ, âNâ, âSâ). An arrow indicating the designated north direction (which may not necessarily correspond to true north) has been placed on each overhead view.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-9 CO01: SH-6/I-70 spur, Eagle, Colorado CO01-E1 CO01-N1 CO01-V1 CO01-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-10 CO02: South Golden Road/Johnson Rd/16th Street, Golden, Colorado CO02-E1 CO02-S1 CO02-V1 CO02-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-11 CO03: South Golden Road/Utah St., Golden, Colorado CO03-E1 CO03-N1 CO03-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-12 MD01: Tollgate Rd./Marketplace Dr., Bel Air, Maryland MD01-E1 MD01-N1 MD01-S1 MD01-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-13 MD02: MD213/Leeds Rd/Elk Mills Rd. (Lanzi Circle), Leeds, Maryland MD02-N1 MD02-S1 MD02-V1 MD02-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-14 MD03: MD24/MD165, Jarrettsville (North Harford), Maryland MD03-E1 MD03-N1 MD03-V1 MD03-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-15 MD04: MD 139 (Charles St.)/Bellona Ave., Baltimore County, Maryland MD04-E1 MD04-S1 MD04-V1 MD04-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-16 MD05: MD45/MD146/Joppa Rd., Towson, Maryland MD05SW-NW1 MD05SW-S1 MD05SW-V1 MD05SW-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-17 MD06: MD 2/MD 408/MD 422, Lothian, Maryland MD06-E1 MD06-N1 MD06-S1 MD06-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-18 MD07: MD 140/MD 832/Antrim Blvd, Taneytown, Maryland MD07-E1 MD07-N1 MD07-V1 MD07-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-19 ME01: US 202/State Route 237, Gorham, Maine ME01-E1 ME01-N1 ME01-V1 ME01-S1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-20 MI01: Hamilton Rd/Marsh Rd, Okemos, Michigan MI01-E1 MI01-N1 MI01-V1 MI01-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-21 NV01: Hill Center Drive/Village Center Circle/Meadow Hills Drive, Las Vegas, Nevada NV01-N1 NV01-E1 NV01-W1 NV01-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-22 NV02: Town Center Drive/Hualapi Way/Far Hills Drive, Las Vegas, Nevada NV02-E1 NV02-S1 NV02-W1 NV02-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-23 NV03: Town Center Drive/Village Center Circle/Library Hills Drive, Las Vegas, Nevada NV03-N1 NV03-V1 NV03-S1 NV03-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-24 NV04: Town Center Drive/Banburry Cross Drive/Canyon Run Drive, Las Vegas, Nevada NV04-E1 NV04-V1 NV04-S1 NV04-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-25 OR01: Colorado/Simpson, Bend, Oregon OR01-N1 OR01-W1 OR01-V1 OR01-S1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-26 VT03: Rte. 9/Rte. 5, Brattleboro, Vermont VT03-W1 VT03-N1 VT03-S1 VT03-V1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-27 WA01: SR 16 SB Ramp Terminal, Gig Harbor, Washington WA01-E1 WA01-N1 WA01-V1 WA01-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-28 WA03: High School Rd/Madison Ave, Bainbridge Island, Washington WA03-E1 WA03-N1 WA03-V1 WA03-S1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-29 WA04: Mile Hill Dr. (Hwy 166)/Bethel Ave, Port Orchard, Washington WA04-E1 WA04-N1 WA04-V1 WA04-S1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-30 WA05 NE Inglewood Hill/216th Ave NE, Sammamish, Washington WA05-E1 WA05-N1 WA05-V1 WA05-W1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-31 WA07: I-5 off-ramp/Quinault Dr/Galaxy Dr, Lacey, Washington WA07-E1 WA07-N1 WA07-V1 WA07-S1
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-32 Details on Pedestrian-Bicycle Study Sites CA06: Anderson Road/Alvarado Avenue, Davis, California - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 98 ft and 44 ft, respectively. There is also a 10- ft wide truck apron. - Bicyclist data were collected for 89 observations on one approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 15 ft wide. The curb- to-curb travel distance is 50 ft. CA17: Milpas Street/US 101 NB ramps/Carpinteria Street, Santa Barbara, California - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - Bicyclist data were collected for 57 observations on one of the surface street approaches. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is approximately 12 ft wide. The estimated curb-to-curb travel distance is estimated to be 48 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-33 FL11-E: SR 60/Gulf Boulevard (SR 699), Clearwater Beach, Florida - Roundabout is located in an urban area and includes 6 approaches and 2 circulatory lanes. The roundabout has a generally elliptical shape. - The inscribed circle diameter and central island diameter are approximately 200 to 220 ft and 171 to 191 ft, respectively. There is also a 2.5-ft wide truck apron. - Data were collected for 135 pedestrian crossing events on the east approach (Causeway). Bicyclist data were collected for 19 observations on the same approach. - The crosswalk traverses two lanes on the entry leg, a raised splitter island, and two lanes on the exit leg. The splitter island is approximately 14 ft wide. The estimated curb-to- curb travel distance is 62 ft. MD05-SW-W: MD 45/MD 146/Allegheny Avenue/Joppa Road, Towson, Maryland - Roundabout is located in an urban area and includes 5 approaches and 2 circulatory lanes. - The oval-shaped roundabout has an average inscribed circle diameter of 140 ft. The central island measures 60 ft wide by 190 ft long. There is also a 5-ft wide truck apron. - Data were collected for 65 pedestrian crossings on the west approach (Allegheny Avenue). - The crosswalk traverses two lanes on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 6 ft wide. The curb-to-curb travel distance is 52 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-34 MD05-SW/NW: MD 45/MD 146/Allegheny Avenue/Joppa Road, Towson, Maryland - Roundabout is located in an urban area and includes 5 approaches and 2 circulatory lanes. - The oval-shaped roundabout has an average inscribed circle diameter of 140 ft. The central island measures 60 ft wide by 190 ft long. There is also a 5-ft wide truck apron. - Data were collected for 38 pedestrian crossings on the northwest approach (York Road). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is approximately 8 ft wide. The curb-to-curb travel distance is 40 ft. MD05-SW/S: MD 45/MD 146/Allegheny Avenue/Joppa Road, Towson, Maryland - Roundabout is located in an urban area and includes 5 approaches and 2 circulatory lanes. - The oval-shaped roundabout has an average inscribed circle diameter of 140 ft. The central island measures 60 ft wide by 190 ft long. There is also a 5-ft wide truck apron. - Data were collected for 89 pedestrian crossings on the south approach (York Road). - The crosswalk traverses two lanes on the entry leg, a raised splitter island, and two lanes on the exit leg. The splitter island is approximately 15 ft wide. The curb-to-curb travel distance is estimated to be 65 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-35 NV03-S: Town Center Drive/Village Center Circle/Library Hills Drive, Las Vegas, Nevada - Roundabout is located in an urban area and includes 4 approaches and 2 circulatory lanes. - The inscribed circle diameter and central island diameter are 300 ft and 214 ft, respectively. There is also a 5- ft wide truck apron. - Data were collected for 22 pedestrian crossings on the south approach (Town Center Drive). - The crosswalk traverses two lanes on the entry leg, a raised splitter island, and two lanes on the exit leg. The splitter island is approximately 20 ft wide. The curb-to-curb travel distance is estimated to be 80 ft. OR01-N: Colorado Avenue/Simpson Drive, Bend, Oregon - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 158 ft and 78 ft, respectively. There is also a 20- ft wide truck apron. - Bicyclist data were collected for 59 observations on the north approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 18 ft wide. The curb- to-curb travel distance is 48 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-36 OR01-S: Colorado Avenue/Simpson Drive, Bend, Oregon - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 158 ft and 78 ft, respectively. There is also a 20- ft wide truck apron. - Bicyclist data were collected for 27 observations on the south approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 18 ft wide. The curb- to-curb travel distance is 48 ft. OR01-W: Colorado Avenue/Simpson Drive, Bend, Oregon - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 158 ft and 78 ft, respectively. There is also a 20- ft wide truck apron. - Bicyclist data were collected for 26 observations on the south approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 16 ft wide. The curb- to-curb travel distance is 48 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-37 UT02-E: 2000 South/Sandhill Road, Orem, Utah - Roundabout includes 4 approaches and 2 circulatory lanes. - Data were collected for 131 pedestrian crossings on the east approach. - The crosswalk is located at the very end of the splitter island and traverses one lane on the entry leg, the raised splitter island, and one lane on the exit leg. The splitter island at this point is approximately 4 ft wide. The curb-to-curb travel distance is estimated to be 60 ft. UT02-W: 2000 South/Sandhill Road, Orem, Utah - Roundabout includes 4 approaches and 2 circulatory lanes. - Data were collected for 35 pedestrian crossings on the east approach. - The crossing is located upstream of the splitter island and traverses one lane on the entry leg, a narrow painted median, and one lane on the exit leg. The painted median at this point is approximately 3 ft wide. The curb-to-curb travel distance is estimated to be 30 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-38 VT01-N: Main Street (Route 7A)/Grand Union, Manchester, Vermont - Roundabout is located in an urban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 100 ft and 22 ft, respectively. There is also a 21- ft wide truck apron. - Data were collected for 95 pedestrian crossings on the north approach (Main Street). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 4 ft wide. The curb- to-curb travel distance is 41ft. VT02-N: Main Street/Spring Street, Montpelier, Vermont - Roundabout is located in an urban area and includes 3 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 110 ft and 35 ft, respectively. There is also a 17 to 20-ft wide truck apron. - Bicyclist data were collected for 39 observations on the north approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is approximately 6 ft wide. The curb-to-curb travel distance is estimated to be 42 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-39 VT02-S: Main Street/Spring Street, Montpelier, Vermont - Roundabout is located in an urban area and includes 3 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 110 ft and 35 ft, respectively. There is also a 17 to 20-ft wide truck apron. - Bicyclist data were collected for 58 observations on the south approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is approximately 15 ft wide. The curb-to-curb travel distance is 50 ft. VT02-W: Main Street/Spring Street, Montpelier, Vermont - Roundabout is located in an urban area and includes 3 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 110 ft and 35 ft, respectively. There is also a 17 to 20-ft wide truck apron. - Bicyclist data were collected for 49 observations on the west approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 10 ft wide. The curb- to-curb travel distance is estimated to be 46 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-40 WA02-E: Borgen Boulevard/51st Avenue, Gig Harbor, Washington - Roundabout is located in a suburban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 148 ft and 72 ft, respectively. There is also a 7-ft wide truck apron. - Data were collected for 24 pedestrian crossings on the east approach (Borgen Boulevard). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 12 ft wide. The curb- to-curb travel distance is estimated to be 55 ft. WA03-S: High School Road/Madison Avenue, Bainbridge Island, Washington - Roundabout is located in a suburban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 104 ft and 44 ft, respectively. There is also a 10- ft wide truck apron. - Data were collected for 136 pedestrian crossings on the south approach (Madison Avenue). Bicyclist data were collected for 112 observations on the approach. - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 7 ft wide. The curb- to-curb travel distance is 38 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-41 WA03-E: High School Road/Madison Avenue, Bainbridge Island, Washington - Roundabout is located in a suburban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 104 ft and 44 ft, respectively. There is also a 10- ft wide truck apron. - Bicyclist data were collected for 84 observations from the east approach (High School Road). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 7 ft wide. The curb- to-curb travel distance is 40 ft. WA03-W: High School Road/Madison Avenue, Bainbridge Island, Washington - Roundabout is located in a suburban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 104 ft and 44 ft, respectively. There is also a 10- ft wide truck apron. - Bicyclist data were collected for 30 observations from the east approach (High School Road). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 6 ft wide. The curb- to-curb travel distance is 38 ft.
NCHRP Web-Only Document 94: Appendixes to NCHRP Report 572: Roundabouts in the United States C-42 WA03-N: High School Road/Madison Avenue, Bainbridge Island, Washington - Roundabout is located in a suburban area and includes 4 approaches and 1 circulatory lane. - The inscribed circle diameter and central island diameter are 104 ft and 44 ft, respectively. There is also a 10- ft wide truck apron. - Bicyclist data were collected for 29 observations from the east approach (Madison Avenue ). - The crosswalk traverses one lane on the entry leg, a raised splitter island, and one lane on the exit leg. The splitter island is 6 ft wide. The curb- to-curb travel distance is 39 ft.
