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Published byEmily Davies Modified over 11 years ago
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Presentation to ODOT Planners April 25, 2012 Bill Johnston – Area 1 Planner (Astoria) US 101: Camp Rilea to Surf Pines Lane Facility Plan
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Overview of Presentation Project overview Practical design considerations Alternate mobility standards NEPA compliance
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Study Area 4.6 mile section of US101 South of Warrenton, north of Gearhart Project limits: Camp Rilea (Patriot Way) to Surf Pines Lane Mostly a 2-lane section 4 lanes north and south of study area
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Issues Above average crash rate50% involve turns No medianSteep shouldersDriveways Inadequate sight distance in some locations Excessive speed is not a factor55 mph limit Congestion from turns and seasonal traffic Impatient motorists taking risks
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Practical design considerations Constructing 5-lanes is too expensive ($45M) Full 3-lane is also too expensive ($31M) 20-year funding assumption to establish performance expectations: $15 Recommend improving north segment to 3- lanes plus lower-cost spot improvements in rest of corridor
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Features Raised medians to limit turning movements U-turns and J-turns Combining and improving intersections Geometric improvements Widening shoulders
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Mobility standards, NEPA considerations Cant meet mobility targets at intersections Establish alternate mobility standards by altering acceptable V/C or altering analysis methodology to exclude seasonal peaks Need to show that spot improvements have independent utility for Categorical Exclusion 3-lane improvement must be evaluated through a single NEPA process (either EA or EIS)
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