Auburn Boulevard Bridge Replacement Project
Figure (Photo) 1- Auburn Boulevard Bridge at Arcade Creek (looking northeast)
The City of Sacramento Department of Public Works is proposing to replace the Auburn Boulevard Bridge at Arcade Creek due to its structurally deficient and functionally obsolete status, as determined by the Federal Highway Administration criteria. The project site is located in the north eastern corner of the City of Sacramento, near the border with Sacramento County, where Auburn Boulevard crosses Arcade Creek, east of Winding Way and west of Park Road and the I-80 ramps. The Auburn Boulevard Bridge over Arcade Creek is a reinforced concrete T-beam structure that was originally constructed in 1927, and then widened in 1965. The bridge has two spans with a total length of 70 feet. It carries two lanes of traffic in both the eastbound and westbound direction, with a left turn pocket for westbound to southbound users.
The new bridge will be 100 feet wide (see cross section below) and be raised slightly to remain operational during a 20-year storm event. The new bridge will also be designed to accommodate future improvements to the Auburn Boulevard/Winding Way intersection that the County may implement.
Figure 2 – Cross Section of Proposed Bridge Replacement
The proposed bridge replacement will provide a new bridge that is consistent with the American Association of State Highway and Transportation Officials (AASHTO) and Caltrans design standards for roadway geometry, accessibility and structural integrity. The profile of the bridge will be raised slightly which will allow the bridge to stay above water and operational during a 20-year storm event.
COSTS AND FUNDING
The estimated construction cost of replacing the Auburn Boulevard Bridge is approximately $7M and is primarily funded through the Federal Bridge Replacement Program with Measure A sales tax funds being used as the Local Match.
The City is currently conducting preliminary engineering studies and the environmental review and this phase is anticipated to be completed in late 2017. Final Design and Right-of-Way acquisition work will start in 2017 and be completed in 2018 and Construction is anticipated to begin in early 2019.
Zuhair Amawi, Senior Engineer