Holly Street Bridge Seismic Retrofit Project

Holly Street Bridge Seismic Retrofit Project

The City of Pasadena, in coordination with the California Department of Transportation (Caltrans), proposes to rehabilitate and seismically retrofit the existing two-lane Holly Street Bridge (No. 53C1041) over the Arroyo Seco Channel, the Arroyo Seco Trail (a Class 1 multi-use trail), and North Arroyo Boulevard. The seismic retrofit would occur on the Holly Street Bridge southeast of Linda Vista Avenue, and entirely within the City of Pasadena, Los Angeles County, California. Staging areas would occur along North Arroyo Boulevard between the Holly Street Bridge and Seco Street, as well as other staging areas at the intersection of Seco Street and West Drive. Access to the bridge would also occur along North Arroyo Boulevard and Linda Vista Avenue. The existing bridge was constructed in 1925 and is 45.3-feet wide by 400.0-feet long. The bridge is a concrete arch-deck span constructed from cast-in-place concrete. According to the 2020 Caltrans Bridge Inspection Report (BIR), the bridge currently holds a sufficiency rating of 39.4 and is classified as Structurally Deficient. The proposed Project would provide needed rehabilitation and a seismic retrofit to the existing bridge. Bridge rehabilitation and retrofit would include a deck rehabilitation, rehabilitation of the existing concrete barrier, joint rehabilitation, spandrel column retrofit, concrete spall repair, and a bonded grout treatment. Duration of construction is still being determined but may take between 12 and 18 months. Deck rehabilitation would require closure of the Holly Street Bridge to vehicle and pedestrian traffic for several months; however, adjacent communities would be notified prior to the closure and the proposed Project would involve the use of a detour and temporary access route using Linda Vista Avenue, San Rafael Avenue, Colorado Boulevard, and Orange Grove Boulevard.

Pasadena

Los Angeles

Citywide, Southern California

Los Angeles