Seismic retrofit

7th Street Bridge (Los Angeles County, California)
Built 1910, Second Deck added 1927, Seismic Retrofit 1995
Concrete arch bridge over Los Angeles River on Seventh Street in Los Angeles
Open to traffic

North Spring Street Bridge (Los Angeles County, California)
Built 1928; Rehabilitated 1939; Seismic upgrade 1992
Concrete arch bridge over Los Angeles River on North Spring Street in Los Angeles
Open to traffic