INTERSTATE 880
INTERSTATE 880 in 04-Ala-880-31.07-Oak, Alameda County, California received a condition grade of B (61/100). Built in 1957, the bridge carries 203K vehicles daily on INTERSTATE 880 over Jackson Madison Oak.
INTERSTATE 880 carries a B on the BridgeSafety Condition Score with 61/100. 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 1957 and is now 69 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 880 carries an average daily traffic count of 203,000 vehicles, with 9 lane(s) crossing Jackson Madison Oak. 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 880 is a 69-year-old bridge located 04-Ala-880-31.07-Oak in Alameda County, California. The bridge carries INTERSTATE 880 over Jackson Madison Oak with 9 traffic lanes, handling approximately 203K vehicles per day. Built in 1957 and reconstructed in 1981, the structure spans 291.1 meters.
The bridge received a Condition Grade of B (61/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (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
INTERSTATE 880 has a Condition Score of 61/100 (Grade B). Its deck is rated 5/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
INTERSTATE 880 was built in 1957 and reconstructed in 1981, making it 69 years old. The average bridge age in the United States is 48 years.
INTERSTATE 880 carries approximately 203K vehicles per day (average daily traffic). The bridge has 9 traffic lanes. It is 291.1 meters long and located on INTERSTATE 880 in 04-Ala-880-31.07-Oak, Alameda County, California.
No, INTERSTATE 880 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 880 is located 04-Ala-880-31.07-Oak in Alameda County, California. The bridge carries INTERSTATE 880 over Jackson Madison Oak. Its coordinates are 37.795211, -122.266161. It is maintained by State Highway Agency.
INTERSTATE 880 carries INTERSTATE 880 over Jackson Madison Oak. The bridge is 291.1 meters long and was built in 1957, with reconstruction in 1981.
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.