The project involves replacement of the Upper Doolittle Creek Bridge on Forest Route 17N11 and Mill Creek Bridge on Forest Route 18N15 within Klamath National Forest in Siskiyou County, CA. Both bridges were completely damaged by fire in 2020 and will be fully replaced with prefabricated steel bridges.
Prior to the fire damage, the extisting Upper Dootlittle Creek on Forest Route 17N11 was constructed in 1966 and was a one-large, two-way traffic treated timber bridge at zero skew. It had an overall bridge length of 40.8 feet, roadway width (curb to curb) of 14.1 feet, and deck width (outside-to-outside) of 15.3 feet.
The existing Mill Creek Bridge on Forest Route 18N15 was constructed in 1982 and had treated timber superstructure components at zero skew. It had an overall bridge length of 40 feet, roadway width (curb to curb) of 20.5 feet, and deck width (outside to outside) of 22.5 feet.
Anticipated Timeline
Project Photos
