SANTA FELICIA DAM SPILLWAY BRIDGE
SANTA PAULA, CA
Please read the article by United Water Conservation District for full description of work.
Seismic Upgrades to Dam Spillway Bridge Nearly Complete
“When it was completed in 1956 the center span of the Santa Felicia Dam spillway bridge had the longest precast, post-tension concrete beams in the world, measuring 122 feet. As impressive of an engineering feat as it was at the time, 50 years of service and stricter seismic codes left the bridge in need of repairs. The repairs were especially important since the bridge is the main access to Santa Felicia Dam, itself.
The major component of work was the replacement of the roller bearing on the west bridge pier, which accommodates thermal expansion and contraction, with Teflon coated sliding plates. The 170-ton center span was jacked up, the roller bearing removed and the new sliding plates were then installed. The Teflon coated sliding plates distribute the weight of the bridge more evenly than roller bearing. The platform on which the bridge girders rested was also widened to bring it in line with the current seismic code intended to lessen the chance of the structural failure during a major earthquake.
The bridge was closed at the beginning of March. Though it was expected the work would take six months, it now appears the project will be done by Memorial Day, three months ahead of schedule.
At a cost of $250,000 the project will also be $100,000 below budget. Cushman Contracting Corporation of Goleta is the prime contractor. The project design engineer was Bengal Engineering, Inc., also of Goleta.”