INTERSTATE 5
INTERSTATE 5 in 07-La-005-31.23-Brb, Los Angeles County, California received a condition grade of B (62/100). Built in 1960, the bridge carries 239K vehicles daily on INTERSTATE 5 over Buena Vista ST Winona Av.
INTERSTATE 5 carries a B on the BridgeSafety Condition Score with 62/100. 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 1960 and is now 66 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. INTERSTATE 5 carries an average daily traffic count of 239,020 vehicles, with 9 lane(s) crossing Buena Vista ST Winona Av. 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
INTERSTATE 5 is a 66-year-old bridge located 07-La-005-31.23-Brb in Los Angeles County, California. The bridge carries INTERSTATE 5 over Buena Vista ST Winona Av with 9 traffic lanes, handling approximately 239K vehicles per day. Built in 1960 and reconstructed in 2021, the structure spans 142 meters.
The bridge received a Condition Grade of B (62/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE 5 has a Condition Score of 62/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 5 was built in 1960 and reconstructed in 2021, making it 66 years old. The average bridge age in the United States is 48 years.
INTERSTATE 5 carries approximately 239K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 142 meters long and located on INTERSTATE 5 in 07-La-005-31.23-Brb, Los Angeles County, California.
No, INTERSTATE 5 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
INTERSTATE 5 is located 07-La-005-31.23-Brb in Los Angeles County, California. The bridge carries INTERSTATE 5 over Buena Vista ST Winona Av. Its coordinates are 34.198981, -118.337594. It is maintained by State Highway Agency.
INTERSTATE 5 carries INTERSTATE 5 over Buena Vista ST Winona Av. The bridge is 142 meters long and was built in 1960, with reconstruction in 2021.
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.