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US 101: Camp Rilea to Surf Pines Lane Facility Plan. Presentation to ODOT Planners April 25, 2012 Bill Johnston – Area 1 Planner (Astoria). Overview of Presentation. Project overview Practical design considerations Alternate mobility standards NEPA compliance. Study Area.
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US 101: Camp Rilea to Surf Pines Lane Facility Plan Presentation to ODOT Planners April 25, 2012 Bill Johnston – Area 1 Planner (Astoria)
Overview of Presentation • Project overview • Practical design considerations • Alternate mobility standards • NEPA compliance
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
Issues • Above average crash rate—50% involve turns • No median—Steep shoulders—Driveways • Inadequate sight distance in some locations • Excessive speed is not a factor—55 mph limit • Congestion from turns and seasonal traffic • Impatient motorists taking risks
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
Features Raised medians to limit turning movements U-turns and J-turns Combining and improving intersections Geometric improvements Widening shoulders
Mobility standards, NEPA considerations • Can’t 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)
