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CITY OF COLTON AGENDA REPORT FOR COUNCIL MEETING OF MAY 2, 2006 TO: HONORABLE MAYOR AND CITY COUNCIL FROM: Amer Jakher, P.E., PW Director/City Engineer SUBJECT: AUTHORIZE AWARD OF CONTRACT TO TY LIN CONSULTING FOR THE SEISMIC RETROFIT OF SEVEN BRIDGES, IN AN AMOUNT NOT TO EXCEED $64,756. DATE: April 20, 2006 BACKGROUND: The Local Bridge Seismic Safety Retrofit Program is part of the statewide Seismic Retrofit Program. This program was established by emergency legislation (SB 36X) enacted during an extraordinary legislative session after the October 1989 Loma Prieta earthquake. The purpose of this program is to provide funding assistance to local agencies for remedying structural seismic design deficiencies of public bridges on local streets and roads in California. At the time this program was created, there were approximately 12,000 publicly -owned local agency bridges in the state. All bridges were screened for risk of collapse during seismic events. Currently, there are 1,223 bridges in the program at various stages of project development. The Director of Caltrans has set the Seismic Safety Retrofit program as the top priority of the California Department of Transportation. DISCUSSION/ANALYSIS: In the early 1990s, City staff began the preliminary design process for the seismic retrofitting of the bridges within the City of Colton. From research and review of files, current City staff has determined that plans had been constructed showing the seismic retrofitting needed to make the bridges safe in the event of an earthquake. In March 2005, Caltrans staff re-evaluated and conducted physical evaluations of the eight bridges listed below to determine the structures' seismic fitness. The bridges requiring retrofitting are: • Br. No. 54C-0077 La Cadena Drive at Santa Ana River • Br. No. 54C-0078 La Cadena Drive at BNSF • Br. No. 54C-0079 La Cadena Drive Pedestrian Overcrossing • Br. No. 54C-0100—Mt. Vernon Avenue at Santa Ana River ■ Br. No. 54C-0101—Mt. Vernon Avenue at UPRR ■ Br. No. 54C-0375 West C Street at UPRR • Br. No. 54C -0384—C Street at UPRR • Br. No. 54C-0599 Rancho Avenue Pedestrian Overcrossing. 7/10/03 City Clerk's Office Cb