S680-E580 CONN SEP
S680-E580 CONN SEP in 04-Ala-680-R20.72-Ple, Alameda County, California received a condition grade of B (74/100). Built in 2001, the bridge carries 125K vehicles daily on S680-E580 CONN SEP over I-680 I-580 Dublin Bl.
S680-E580 CONN SEP carries a B on the BridgeSafety Condition Score with 74/100. 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 2001, making it 25 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. S680-E580 CONN SEP carries an average daily traffic count of 125,000 vehicles, with 2 lane(s) crossing I-680 I-580 Dublin Bl. 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
S680-E580 CONN SEP is a 25-year-old bridge located 04-Ala-680-R20.72-Ple in Alameda County, California. The bridge carries S680-E580 CONN SEP over I-680 I-580 Dublin Bl with 2 traffic lanes, handling approximately 125K vehicles per day. Built in 2001, the structure spans 1340 meters.
The bridge received a Condition Grade of B (74/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
S680-E580 CONN SEP has a Condition Score of 74/100 (Grade B). Its deck is rated 6/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
S680-E580 CONN SEP was built in 2001, making it 25 years old. The average bridge age in the United States is 48 years.
S680-E580 CONN SEP carries approximately 125K vehicles per day (average daily traffic). The bridge has 2 traffic lanes. It is 1340 meters long and located on S680-E580 CONN SEP in 04-Ala-680-R20.72-Ple, Alameda County, California.
No, S680-E580 CONN SEP is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
S680-E580 CONN SEP is located 04-Ala-680-R20.72-Ple in Alameda County, California. The bridge carries S680-E580 CONN SEP over I-680 I-580 Dublin Bl. Its coordinates are 37.701603, -121.917150. It is maintained by State Highway Agency.
S680-E580 CONN SEP carries S680-E580 CONN SEP over I-680 I-580 Dublin Bl. The bridge is 1340 meters long and was built in 2001.
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.