Featured Project

Snake River Road runs from City of Asotin, Washington south for 32 miles to the Oregon border. It is the only access into Hells Canyon (recreation), and serves residential and commercial needs. It is truly a regionally significant route. Accidents and traffic have steadily increased. Prior to construction, MP 17.55 to 19.00 was only twenty feet wide with a gravel surface, with Snake River on the east side and steep bluffs on the west. Drainage and alignment were sub-standard and in need of improvement. Three existing springs that ran water under the roadway and into the river required additional design features to mitigate.Cultural resources approval and other environmental issues were major challenges. To avoid impacting the river and to minimize steep rock cuts into the bluffs a gabion wall, eight hundred thirty feet long was constructed adjacent to river. Seepage Basins were installed to convey the water from the springs to the river. Due to the recreational nature of the roadway vehicle pullouts were installed where ever possible. Curve realignment and guardrail were placed to improve safety.