MANCHESTER BLVD
MANCHESTER BLVD in 07-La-405-23.36-Ing, Los Angeles County, California received a condition grade of C (56/100). Built in 1961, the bridge carries 150K vehicles daily on MANCHESTER BLVD over Route 405 & Mnchstr-N405.
MANCHESTER BLVD carries a C on the BridgeSafety Condition Score with 56/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1961 and is now 65 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. MANCHESTER BLVD carries an average daily traffic count of 150,000 vehicles, with 7 lane(s) crossing Route 405 & Mnchstr-N405. 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
MANCHESTER BLVD is a 65-year-old bridge located 07-La-405-23.36-Ing in Los Angeles County, California. The bridge carries MANCHESTER BLVD over Route 405 & Mnchstr-N405 with 7 traffic lanes, handling approximately 150K vehicles per day. Built in 1961, the structure spans 59.7 meters.
The bridge received a Condition Grade of C (56/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 5/9 (fair), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
MANCHESTER BLVD has a Condition Score of 56/100 (Grade C). Its deck is rated 5/9, superstructure 5/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
MANCHESTER BLVD was built in 1961, making it 65 years old. The average bridge age in the United States is 48 years.
MANCHESTER BLVD carries approximately 150K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 59.7 meters long and located on MANCHESTER BLVD in 07-La-405-23.36-Ing, Los Angeles County, California.
No, MANCHESTER BLVD is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
MANCHESTER BLVD is located 07-La-405-23.36-Ing in Los Angeles County, California. The bridge carries MANCHESTER BLVD over Route 405 & Mnchstr-N405. Its coordinates are 33.961469, -118.369703. It is maintained by State Highway Agency.
MANCHESTER BLVD carries MANCHESTER BLVD over Route 405 & Mnchstr-N405. The bridge is 59.7 meters long and was built in 1961.
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.