STATE ROUTE 57
STATE ROUTE 57 in 07-La-057-R0.72, Los Angeles County, California received a condition grade of F (0/100). Built in 1972, the bridge carries 203K vehicles daily on STATE ROUTE 57 over Brea Canyon Channel. It is classified as structurally deficient.
STATE ROUTE 57 carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
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 8 lane(s) crossing Brea Canyon Channel. 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-R0.72 in Los Angeles County, California. The bridge carries STATE ROUTE 57 over Brea Canyon Channel with 8 traffic lanes, handling approximately 203K vehicles per day. Built in 1972, the structure spans 6.1 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
STATE ROUTE 57 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
STATE ROUTE 57 was built in 1972, 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 8 traffic lanes. It is 6.1 meters long and located on STATE ROUTE 57 in 07-La-057-R0.72, Los Angeles County, California.
Yes, STATE ROUTE 57 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
STATE ROUTE 57 is located 07-La-057-R0.72 in Los Angeles County, California. The bridge carries STATE ROUTE 57 over Brea Canyon Channel. Its coordinates are 33.955172, -117.861736. It is maintained by State Highway Agency.
STATE ROUTE 57 carries STATE ROUTE 57 over Brea Canyon Channel. The bridge is 6.1 meters long and was built in 1972.
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.