INTERSTATE 680
INTERSTATE 680 in 04-Cc-680-13.93-Wlc, Contra Costa County, California received a condition grade of B (71/100). Built in 1994, the bridge carries 195K vehicles daily on INTERSTATE 680 over Olympic Boulevard.
INTERSTATE 680 carries a B on the BridgeSafety Condition Score with 71/100. 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 1994, making it 32 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. INTERSTATE 680 carries an average daily traffic count of 195,300 vehicles, with 10 lane(s) crossing Olympic Boulevard. 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 680 is a 32-year-old bridge located 04-Cc-680-13.93-Wlc in Contra Costa County, California. The bridge carries INTERSTATE 680 over Olympic Boulevard with 10 traffic lanes, handling approximately 195K vehicles per day. Built in 1994 and reconstructed in 1997, the structure spans 58.2 meters.
The bridge received a Condition Grade of B (71/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 6/9 (fair), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE 680 has a Condition Score of 71/100 (Grade B). Its deck is rated 5/9, superstructure 6/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 680 was built in 1994 and reconstructed in 1997, making it 32 years old. The average bridge age in the United States is 48 years.
INTERSTATE 680 carries approximately 195K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 58.2 meters long and located on INTERSTATE 680 in 04-Cc-680-13.93-Wlc, Contra Costa County, California.
No, INTERSTATE 680 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 680 is located 04-Cc-680-13.93-Wlc in Contra Costa County, California. The bridge carries INTERSTATE 680 over Olympic Boulevard. Its coordinates are 37.893825, -122.066439. It is maintained by State Highway Agency.
INTERSTATE 680 carries INTERSTATE 680 over Olympic Boulevard. The bridge is 58.2 meters long and was built in 1994, with reconstruction in 1997.
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.