SCH Number 2015052044

Project Info

Title

Shells Road Bridge (No. 39C-0180) Replacement at Central California Irrigation District Main Canal BRLO-5938 (192)

Description

The proposed (replacement) bridge would have a 32-foot clear width with two 12-foot travel lanes and two 4-foot shoulders as prescribed by the County standard 3-A5 and AASHTO for a facility carrying an Average Daily Traffic (ADT) count of 309 with a truck ADT of 14.7 percent. The proposed bridge structure would be single-span and approximately 77 feet long with a total bridge deck width of 34.8 feet (32 feet of clear width). The roadway profile of the replacement bridge would be on a higher vertical alignment in order to improve the hydraulic performance of the canal crossing and allow debris to flow under the bridge. In order for the replacement structure to provide equal or greater hydraulic capacity, the soffil of the replacement bridge would be set 12 inches higher than the high water elevation, which would increase the roadway profile by about 20 inches. The roadway approach work would extend approximately 200 feet east and west of the new bridge. Constructing the proposed bridge on the higher vertical roadway profile would require the acquisition of the right-of-way on either side of the bridge or would require the construction of retaining wells along the length of the roadway to retain the new approach fill.

2 documents in project