STATE ROUTE 91
STATE ROUTE 91 in 12-Ora-091-R0.28-Lpma, Orange County, California received a condition grade of B (78/100). Built in 1969, the bridge carries 236K vehicles daily on STATE ROUTE 91 over Walker Street.
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 91 is a 57-year-old bridge located 12-Ora-091-R0.28-Lpma in Orange County, California. The bridge carries STATE ROUTE 91 over Walker Street with 11 traffic lanes, handling approximately 236K vehicles per day. Built in 1969 and reconstructed in 1998, the structure spans 50.4 meters.
The bridge received a Condition Grade of B (78/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
STATE ROUTE 91 has a Condition Score of 78/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
STATE ROUTE 91 was built in 1969 and reconstructed in 1998, making it 57 years old. The average bridge age in the United States is 48 years.
STATE ROUTE 91 carries approximately 236K vehicles per day (average daily traffic). The bridge has 11 traffic lanes. It is 50.4 meters long and located on STATE ROUTE 91 in 12-Ora-091-R0.28-Lpma, Orange County, California.
No, STATE ROUTE 91 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 91 is located 12-Ora-091-R0.28-Lpma in Orange County, California. The bridge carries STATE ROUTE 91 over Walker Street. Its coordinates are 33.860117, -118.037781. It is maintained by State Highway Agency.
STATE ROUTE 91 carries STATE ROUTE 91 over Walker Street. The bridge is 50.4 meters long and was built in 1969, 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.