IMPERIAL HIGHWAY O
IMPERIAL HIGHWAY O in 07-La-110-13.97-La, Los Angeles County, California received a condition grade of B (78/100). Built in 1989, the bridge carries 218K vehicles daily on IMPERIAL HIGHWAY O over Route 110.
IMPERIAL HIGHWAY O 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 1989, making it 37 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. IMPERIAL HIGHWAY O carries an average daily traffic count of 218,000 vehicles, with 6 lane(s) crossing Route 110. 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
IMPERIAL HIGHWAY O is a 37-year-old bridge located 07-La-110-13.97-La in Los Angeles County, California. The bridge carries IMPERIAL HIGHWAY O over Route 110 with 6 traffic lanes, handling approximately 218K vehicles per day. Built in 1989, the structure spans 178.3 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
IMPERIAL HIGHWAY O 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.
IMPERIAL HIGHWAY O was built in 1989, making it 37 years old. The average bridge age in the United States is 48 years.
IMPERIAL HIGHWAY O carries approximately 218K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 178.3 meters long and located on IMPERIAL HIGHWAY O in 07-La-110-13.97-La, Los Angeles County, California.
No, IMPERIAL HIGHWAY O is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
IMPERIAL HIGHWAY O is located 07-La-110-13.97-La in Los Angeles County, California. The bridge carries IMPERIAL HIGHWAY O over Route 110. Its coordinates are 33.930867, -118.281661. It is maintained by State Highway Agency.
IMPERIAL HIGHWAY O carries IMPERIAL HIGHWAY O over Route 110. The bridge is 178.3 meters long and was built in 1989.
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.