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GRAYS HARBOR COUNTY - SOUTH BANK ROAD
Project Number: 1499-02
From Milepost: 11.2 To Milepost:11.9
RATA/CAPP funds: $ 985,500
Design Software: Eagle Point
Completed: 2007
South Bank Road is a major collector route that connects Oakville with Elma in east Grays Harbor County. It serves as an alternate route between these communities and is used as a detour when SR 12 is blocked by serious accidents or land-slides. It is classified a T-3 freight and Goods Road and is the primary access to 5,000-acres of farm land and 50,000-acres of timberland.
The project replaced three substandard 25 mph curves with one 50 mph curve eliminating the need for 4 warning signs. This involved excavating approximately 26,000 cubic yards of gravel material and using it for structural fill and gravel base. The new roadway section has a 24-foot travelled way and two 5-foot shoulders for a total paved width of 34-feet.
A 2350-foot radius horizontal curve was used to keep the affected wetland area under 0.5-acre to expedite the permitting process. A 20-foot wide low profile arch was used to replace two 3-foot diameter culverts that were fish passage barriers.
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CRAB point of contact for both RAP and CAPP programs is Randy Hart P.E., Grant Programs Manager, 360.753.5989