US HIGHWAY 101 SB
US HIGHWAY 101 SB in 07-La-101-17.07l-La, Los Angeles County, California received a condition grade of B (69/100). Built in 1958, the bridge carries 230K vehicles daily on US HIGHWAY 101 SB over N405-N101 Connector Ramp.
US HIGHWAY 101 SB carries a B on the BridgeSafety Condition Score with 69/100. 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 1958 and is now 68 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. US HIGHWAY 101 SB carries an average daily traffic count of 229,750 vehicles, with 5 lane(s) crossing N405-N101 Connector Ramp. 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
US HIGHWAY 101 SB is a 68-year-old bridge located 07-La-101-17.07l-La in Los Angeles County, California. The bridge carries US HIGHWAY 101 SB over N405-N101 Connector Ramp with 5 traffic lanes, handling approximately 230K vehicles per day. Built in 1958, the structure spans 32.9 meters.
The bridge received a Condition Grade of B (69/100) 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
US HIGHWAY 101 SB has a Condition Score of 69/100 (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.
US HIGHWAY 101 SB was built in 1958, making it 68 years old. The average bridge age in the United States is 48 years.
US HIGHWAY 101 SB carries approximately 230K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 32.9 meters long and located on US HIGHWAY 101 SB in 07-La-101-17.07l-La, Los Angeles County, California.
No, US HIGHWAY 101 SB is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
US HIGHWAY 101 SB is located 07-La-101-17.07l-La in Los Angeles County, California. The bridge carries US HIGHWAY 101 SB over N405-N101 Connector Ramp. Its coordinates are 34.159511, -118.467922. It is maintained by State Highway Agency.
US HIGHWAY 101 SB carries US HIGHWAY 101 SB over N405-N101 Connector Ramp. The bridge is 32.9 meters long and was built in 1958.
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.