STRATA performed geotechnical design and construction recommendations for a new 65 foot span, two-lane bridge, replacing an existing concrete culvert to improve Indian Creek Fish Passage below LeClerc Road in Pend Oreille County, Washington. This Federal Highway Administration-funded project also included alignment improvement (straightening and widening) to better accommodate the road’s posted speed limit. Key geotechnical aspects included AASHTO LRFD design criteria, renewable embankment construction via Geosynthetic Wrap-Faced Vegetated Wall design, micropile design for bridge abutment foundations, and flexible pavement design.
STRATA also performed Construction Project Management, Special Inspection and Construction Materials Testing services that was managed per the Washington State Department of Transportation (WSDOT) Local Agency Guidelines Manual (LAG) for Indian Creek Fish Passage. Special Inspection and Construction Materials Testing were performed in accordance with the geotechnical design deliverable, the project plans and specifications, and the WSDOT’s Standard Specifications for Road, Bridge, and Municipal Construction.
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