Practical Highway Design Solutions (2013) / Chapter Skim
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Pages 78-85
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From page 78... ...
78 Appendix i Case examples of practical improvements for Kansas dOT
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79 Example 1: ConsideringAlternate Scopes One recent example of considering alternate scopes was for a project on K-23, a low volume highway in Gove County. The sec�on of K-23 chosen for improvement was constructed in the 1930's and 1940's and has not undergone major reconstruc�on since its ini�al construc�on.
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80 ver�cal alignment allowing a two-foot shoulder (with rumble strips) to be added.
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81 The first op�on would construct all bridge abutments using piles and would involve an 11 month wai�ng period before construc�ng the bridges. Construc�on sequencing would include first construc�ng the bridge embankments.
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82 A�er comparing the scopes, the op�on u�lizing the drilled sha�s without carrying traffic through the se�lement period was chosen. This op�on was the second most expensive, had the second shortest construc�on �meline, and li�le to no delay related expenses.
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83 Design Shoulder Widths Base d o n P rojected Traffi c – Ado pte d 4 /9 8 Legend : 4 ft.
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84 Example 4: Traffic Handling and Accommoda�on On a project under development on US-36 in Norton County, traffic handling and accommoda�on played a par� n determining the project's scope. A 4.5 mile sec�on of US-36 with 2 lanes, 10 foot composite (3' asphalt pavement and 7' turf)
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85 Poten�al Savings: Op�on Savings (FY 2012 dollars) Pavement Rehabilita�on vs.
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