ROUTE 105 & LRT
ROUTE 105 & LRT in 07-La-105-R11.91-Lyn, Los Angeles County, California received a condition grade of B (74/100). Built in 1987, the bridge carries 237K vehicles daily on ROUTE 105 & LRT over Fir Street.
ROUTE 105 & LRT carries a B on the BridgeSafety Condition Score with 74/100. 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 1987, making it 39 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. ROUTE 105 & LRT carries an average daily traffic count of 237,000 vehicles, with 8 lane(s) crossing Fir Street. 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
ROUTE 105 & LRT is a 39-year-old bridge located 07-La-105-R11.91-Lyn in Los Angeles County, California. The bridge carries ROUTE 105 & LRT over Fir Street with 8 traffic lanes, handling approximately 237K vehicles per day. Built in 1987, the structure spans 35.4 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 6/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
ROUTE 105 & LRT has a Condition Score of 74/100 (Grade B). Its deck is rated 7/9, superstructure 6/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
ROUTE 105 & LRT was built in 1987, making it 39 years old. The average bridge age in the United States is 48 years.
ROUTE 105 & LRT carries approximately 237K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 35.4 meters long and located on ROUTE 105 & LRT in 07-La-105-R11.91-Lyn, Los Angeles County, California.
No, ROUTE 105 & LRT is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
ROUTE 105 & LRT is located 07-La-105-R11.91-Lyn in Los Angeles County, California. The bridge carries ROUTE 105 & LRT over Fir Street. Its coordinates are 33.922456, -118.205036. It is maintained by State Highway Agency.
ROUTE 105 & LRT carries ROUTE 105 & LRT over Fir Street. The bridge is 35.4 meters long and was built in 1987.
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.