STATE ROUTE 55
STATE ROUTE 55 in 12-Ora-055-R9.52-Sa, Orange County, California received a condition grade of B (64/100). Built in 1964, the bridge carries 272K vehicles daily on STATE ROUTE 55 over Bnsf Ry Amtrak Metrolink.
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 55 is a 62-year-old bridge located 12-Ora-055-R9.52-Sa in Orange County, California. The bridge carries STATE ROUTE 55 over Bnsf Ry Amtrak Metrolink with 12 traffic lanes, handling approximately 272K vehicles per day. Built in 1964 and reconstructed in 1988, the structure spans 53.3 meters.
The bridge received a Condition Grade of B (64/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (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 55 has a Condition Score of 64/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
STATE ROUTE 55 was built in 1964 and reconstructed in 1988, making it 62 years old. The average bridge age in the United States is 48 years.
STATE ROUTE 55 carries approximately 272K vehicles per day (average daily traffic). The bridge has 12 traffic lanes. It is 53.3 meters long and located on STATE ROUTE 55 in 12-Ora-055-R9.52-Sa, Orange County, California.
No, STATE ROUTE 55 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 55 is located 12-Ora-055-R9.52-Sa in Orange County, California. The bridge carries STATE ROUTE 55 over Bnsf Ry Amtrak Metrolink. Its coordinates are 33.727472, -117.834233. It is maintained by State Highway Agency.
STATE ROUTE 55 carries STATE ROUTE 55 over Bnsf Ry Amtrak Metrolink. The bridge is 53.3 meters long and was built in 1964, with reconstruction in 1988.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.