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From page 123... ... 123 Table G1 contains a list of available plans, programs, guidelines, and manuals from survey respondents. Items followed by a superscript have been included in this appendix as samples. Read the entire page →
From page 124... ... 124 Plan of Action for Scour Monitoring of the Woodrow Wilson Bridge (March 2005 Update) Read the entire page →
From page 125... ... 125 4. ALERT DEPTH If the "Alert Depth" elevations are recorded by the scour equipment, OBD will initiate a more intense monitoring program which may include: Confirm scour depths by on-site inspectors using portable scour equipment (This will be more easily accomplished for Piers 25E, 27E, and 29E; it may be more difficult for Piers 1E and 1W, the bascule piers for the existing bridge) Read the entire page →
From page 126... ... 126 SCOUR MONITORING PROGRAM MANUAL Sonar Scour Monitoring System for Wantagh Parkway over Goose Creek Bridge & Robert Moses Causeway over Fire Island Inlet Prepared for: New York State Department of Transportation Region 10 Prepared by: New York, NY October 1998 Second Edition: July 2002 Third Edition: July 2006 Fourth Edition: August 2007 Read the entire page →
From page 127... ... 127 TABLE OF CONTENTS 1. Description of the System s........................................................................................................................…. Read the entire page →
From page 128... ... 128 SCOUR MONITORING PROGRAM Sonar Scour Monitoring Systems 1. DESCRIPTION OF THE SYSTEMS Fixed sonar scour monitoring systems have been installed at several bridges in Long Island. Read the entire page →
From page 129... ... 129 3. Recording of a "no lock" condition when an echo is not received. Read the entire page →
From page 130... ... 130 5.3 Alerting Systems The alerting system of the scour monitors may be programmed to call Region 10's INFORM Group in Hauppauge, New York. This station is staffed 24 hours/day, seven days/week. Read the entire page →
From page 131... ... 131 The Regional Structures Engineer shall (a) determine when a storm watch or warning has been issued, (b) Read the entire page →
From page 132... ... 132 Senior Structural Engineer Project Engineer Electrical Engineer The office numbers listed in Appendix D, Contact Information, are for use on working days between the hours of 8:00 a.m. Read the entire page →
From page 133... ... 133 Standards (NBIS) regulation, 23 CFR 650.313.e.3, requires DOTs to prepare a POA to monitor known and potential deficiencies and to address critical findings for bridges identified as scour critical. Read the entire page →
From page 134... ... 134 10. ACCESS Often, access to the scour monitoring systems is limited. Read the entire page →
From page 135... ... 135 A Scour Monitoring General Inspection Checklist has been included in Appendix G The electronic version of this form may be obtained from the Regional Hydraulic Engineer or the Scour Monitoring Consultant. Read the entire page →
From page 136... ... 136 15. SYSTEM MALFUNCTION In the event of a scour monitoring system malfunction, the Regional Structures Engineer shall be responsible for notifying the appropriate groups for troubleshooting of the fixed sonar monitoring devices. Read the entire page →
From page 137... ... 137 16. CONTACTS Each bridge location with a scour monitoring system should have a list of contacts as outlined below. Read the entire page →
From page 138... ... 138 Lagasse, P.F., E.V. Richardson, J.D. Read the entire page →
From page 139... ... 139 Nevada Department of Transportation GENERAL SCOUR MONITORING DEVICE OPERATION SONAR Will take readings every hour. Data will be downloaded to HQ computer once a day (between ±2:30 a.m. Read the entire page →
From page 140... ... 140 FLOAT-OUTS No signals will be sent until a float-out is released by a scour event. The bridge phone will call the pager group (twice) Read the entire page →
From page 141... ... 141 B-420 SCOUR RESPONSE PLAN Location: Bridge B-420, US 95 at Piute Wash Scour Event Pager Message: "420, Piute Wash" [false alarm if 420 is missing or different] Pager Group Members: Phone # Cell Phone # Maintenance Supervisor 1 Maintenance Supervisor 2 Maintenance Superintendent District Maintenance Engineer Principal Bridge Maintenance Engineer Responses to Sonar Calls: First call at elevation reading of 2489.0 Scour Location: Midpoint of 6.0' riprap layer (scour depth = 3.0') Read the entire page →
From page 142... ... 142 Sonar (This data is programmed in the monitoring equipment) sonar transducer elevation: 1515.4 ground elevation referenced by sonar at time of installation: 1512.4 elevation readings that trigger successive pager/computer calls: 1512.0, 1510.0, 1506.0, 1503.0 Float-Outs ground elevation at float-out locations at time of installation: 1512.5± top of concrete slope paving: 1512.0± float-out elevation: 1510.5± B-571N SCOUR RESPONSE PLAN Location: Bridge B-571N, I-15 at Toquop Wash Scour Event Pager Message: "571, Toquop Wash" [false alarm if 571 is missing or different] Read the entire page →
From page 143... ... 143 Sonar installed on upstream nose of easternmost pier (pier 4) Read the entire page →
From page 144... ... 144 Second call from channel 2 float-out Scour Location: Nose of center or west pier at midpoint of 6.0' riprap layer (scour depth = 3.0') Response: Mobilize to monitor and potentially close bridge B-1805 SCOUR MONITORING DEVICE DATA Location: Bridge B-1805, FAS 159 (W. Read the entire page →
From page 145... ... 145 Responses to Sonar Calls: First call at elevation reading of 3195.0 Scour Location: Top of pier pile cap (scour depth = 10.0') Response: Mobilize to monitor and potentially close bridge Second call at elevation reading of 3185.0 Scour Location: Midpoint of pier piles (scour depth = 20.0') Read the entire page →
From page 146... ... 146 SCOUR CRITICAL BRIDGE - PLAN OF ACTION 1. GENERAL INFORMATION Structure number: 1-05850-9 City, County, State: Wantagh, Nassau County, NY Waterway: Goose Creek Structure name: Wantagh Parkway Bridge over Goose Creek State highway or facility carried: Wantagh Parkway Owner: NYSDOT Year built: 1929 Year rebuilt: N/A Bridge replacement plans (if scheduled) Read the entire page →
From page 148... ... 148 Frequency of post-flood monitoring: Daily Weekly Monthly Other: Varies, See Manual, Section 5.4 Criteria for termination of flood monitoring: Varies, See Manual, Section 5.4 Criteria for termination of post-flood monitoring: Varies, See Manual, Section 5.4 Scour watch elevation(s) for each pier/abutment: -27 ft (-8.2 m) Read the entire page →
From page 149... ... 149 Emergency repair plans (include source(s) , contact(s) Read the entire page →

From page 123...

... 123 Table G1 contains a list of available plans, programs, guidelines, and manuals from survey respondents. Items followed by a superscript have been included in this appendix as samples.