INTERSTATE 680
INTERSTATE 680 in 04-Ala-680-R15.26-Ple, Alameda County, California received a condition grade of B (62/100). Built in 1967, the bridge carries 122K vehicles daily on INTERSTATE 680 over Pleasanton-Sunol Road. It is classified as structurally deficient.
INTERSTATE 680 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 1967 and is now 59 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 680 carries an average daily traffic count of 122,000 vehicles, with 6 lane(s) crossing Pleasanton-Sunol Road. 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 59-year-old bridge located 04-Ala-680-R15.26-Ple in Alameda County, California. The bridge carries INTERSTATE 680 over Pleasanton-Sunol Road with 6 traffic lanes, handling approximately 122K vehicles per day. Built in 1967 and reconstructed in 1990, the structure spans 53 meters.
The bridge received a Condition Grade of B (62/100) based on Federal Highway Administration inspection data. Its deck is rated 4/9 (poor), superstructure 7/9 (good), and substructure 7/9 (good). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
INTERSTATE 680 has a Condition Score of 62/100 (Grade B). Its deck is rated 4/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is classified as structurally deficient.
INTERSTATE 680 was built in 1967 and reconstructed in 1990, making it 59 years old. The average bridge age in the United States is 48 years.
INTERSTATE 680 carries approximately 122K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 53 meters long and located on INTERSTATE 680 in 04-Ala-680-R15.26-Ple, Alameda County, California.
Yes, INTERSTATE 680 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
INTERSTATE 680 is located 04-Ala-680-R15.26-Ple in Alameda County, California. The bridge carries INTERSTATE 680 over Pleasanton-Sunol Road. Its coordinates are 37.639778, -121.884297. It is maintained by State Highway Agency.
INTERSTATE 680 carries INTERSTATE 680 over Pleasanton-Sunol Road. The bridge is 53 meters long and was built in 1967, with reconstruction in 1990.
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.