STATE ROUTE 91
STATE ROUTE 91 in 12-Ora-091-5.26-Ana, Orange County, California received a condition grade of B (78/100). Built in 1999, the bridge carries 300K vehicles daily on STATE ROUTE 91 over State College BLVD.
STATE ROUTE 91 carries a B on the BridgeSafety Condition Score with 78/100. 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 1999, making it 27 years old — past the early-life period but still well within typical service life. Routine inspections and modest repair work are normal for bridges in this age band. STATE ROUTE 91 carries an average daily traffic count of 300,000 vehicles, with 9 lane(s) crossing State College BLVD. 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 91 is a 27-year-old bridge located 12-Ora-091-5.26-Ana in Orange County, California. The bridge carries STATE ROUTE 91 over State College BLVD with 9 traffic lanes, handling approximately 300K vehicles per day. Built in 1999, the structure spans 44.2 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 7/9 (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 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
STATE ROUTE 91 was built in 1999, making it 27 years old. The average bridge age in the United States is 48 years.
STATE ROUTE 91 carries approximately 300K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 44.2 meters long and located on STATE ROUTE 91 in 12-Ora-091-5.26-Ana, 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-091-5.26-Ana in Orange County, California. The bridge carries STATE ROUTE 91 over State College BLVD. Its coordinates are 33.853983, -117.889558. It is maintained by State Highway Agency.
STATE ROUTE 91 carries STATE ROUTE 91 over State College BLVD. The bridge is 44.2 meters long and was built in 1999.
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.