U.S. HIGHWAY 101
U.S. HIGHWAY 101 in 07-La-101-24.31-La, Los Angeles County, California received a condition grade of B (68/100). Built in 1957, the bridge carries 285K vehicles daily on U.S. HIGHWAY 101 over De Soto AVE.
U.S. HIGHWAY 101 carries a B on the BridgeSafety Condition Score with 68/100. 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 1957 and is now 69 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. U.S. HIGHWAY 101 carries an average daily traffic count of 285,000 vehicles, with 10 lane(s) crossing De Soto AVE. 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
U.S. HIGHWAY 101 is a 69-year-old bridge located 07-La-101-24.31-La in Los Angeles County, California. The bridge carries U.S. HIGHWAY 101 over De Soto AVE with 10 traffic lanes, handling approximately 285K vehicles per day. Built in 1957, the structure spans 29.9 meters.
The bridge received a Condition Grade of B (68/100) 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
U.S. HIGHWAY 101 has a Condition Score of 68/100 (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.
U.S. HIGHWAY 101 was built in 1957, making it 69 years old. The average bridge age in the United States is 48 years.
U.S. HIGHWAY 101 carries approximately 285K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 29.9 meters long and located on U.S. HIGHWAY 101 in 07-La-101-24.31-La, Los Angeles County, California.
No, U.S. HIGHWAY 101 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
U.S. HIGHWAY 101 is located 07-La-101-24.31-La in Los Angeles County, California. The bridge carries U.S. HIGHWAY 101 over De Soto AVE. Its coordinates are 34.168217, -118.588042. It is maintained by State Highway Agency.
U.S. HIGHWAY 101 carries U.S. HIGHWAY 101 over De Soto AVE. The bridge is 29.9 meters long and was built in 1957.
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.