STATE ROUTE 57
STATE ROUTE 57 in 07-La-057-R0.91-Dmbr, Los Angeles County, California received a condition grade of B (72/100). Built in 1972, the bridge carries 203K vehicles daily on STATE ROUTE 57 over Brea Canyon RD.
STATE ROUTE 57 carries a B on the BridgeSafety Condition Score with 72/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1972 and is now 54 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. STATE ROUTE 57 carries an average daily traffic count of 203,000 vehicles, with 10 lane(s) crossing Brea Canyon RD. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
STATE ROUTE 57 is a 54-year-old bridge located 07-La-057-R0.91-Dmbr in Los Angeles County, California. The bridge carries STATE ROUTE 57 over Brea Canyon RD with 10 traffic lanes, handling approximately 203K vehicles per day. Built in 1972 and reconstructed in 1998, the structure spans 104.2 meters.
The bridge received a Condition Grade of B (72/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
STATE ROUTE 57 has a Condition Score of 72/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
STATE ROUTE 57 was built in 1972 and reconstructed in 1998, making it 54 years old. The average bridge age in the United States is 48 years.
STATE ROUTE 57 carries approximately 203K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 104.2 meters long and located on STATE ROUTE 57 in 07-La-057-R0.91-Dmbr, Los Angeles County, California.
No, STATE ROUTE 57 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
STATE ROUTE 57 is located 07-La-057-R0.91-Dmbr in Los Angeles County, California. The bridge carries STATE ROUTE 57 over Brea Canyon RD. Its coordinates are 33.957489, -117.860025. It is maintained by State Highway Agency.
STATE ROUTE 57 carries STATE ROUTE 57 over Brea Canyon RD. The bridge is 104.2 meters long and was built in 1972, with reconstruction in 1998.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.