SCH Number 2024040074

Project Info

Title

Plumbago Road over Kanaka Creek Bridge (13C0051) Replacement Project

Description

The Sierra County Departments of Public Works and Transportation, in conjunction with the California Department of Transportation (Caltrans) and the Federal Highway Administration (FHWA), intend to replace the existing Plumbago Road Bridge (13C0051) over Kanaka Creek. The proposed 92.5-foot-long, 18.3-foot-wide, single-span bridge will be constructed on substantially the same alignment. The new bridge would improve roadway safety and be consistent with American Association of State Highway and Transportation Officials (AASHTO) guidelines. The existing Plumbago Road Bridge constructed in 1985 is a 9-foot-wide single-span railroad flat car superstructure with a deck length of 89 feet. The existing bridge has a steel plate deck and reinforced concrete abutments. Gabion baskets form the wingwalls at the southern abutment. The bridge has a Caltrans sufficiency rating of 48.3 and has a deteriorating bridge deck, inadequate deck geometry, damaged supporting brackets, torn stiffeners, and a failing paint system.

3 documents in project