INTERSTATE 880
INTERSTATE 880 in 04-Ala-880-24.18-Sln, Alameda County, California received a condition grade of C (58/100). Built in 1951, the bridge carries 217K vehicles daily on INTERSTATE 880 over Up RR San Leandro Creek.
INTERSTATE 880 carries a C on the BridgeSafety Condition Score with 58/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1951 and is now 75 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 217,000 vehicles, with 8 lane(s) crossing Up RR San Leandro Creek. 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 75-year-old bridge located 04-Ala-880-24.18-Sln in Alameda County, California. The bridge carries INTERSTATE 880 over Up RR San Leandro Creek with 8 traffic lanes, handling approximately 217K vehicles per day. Built in 1951 and reconstructed in 2014, the structure spans 430.1 meters.
The bridge received a Condition Grade of C (58/100) 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 58/100 (Grade C). 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 1951 and reconstructed in 2014, making it 75 years old. The average bridge age in the United States is 48 years.
INTERSTATE 880 carries approximately 217K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 430.1 meters long and located on INTERSTATE 880 in 04-Ala-880-24.18-Sln, 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-880-24.18-Sln in Alameda County, California. The bridge carries INTERSTATE 880 over Up RR San Leandro Creek. Its coordinates are 37.725219, -122.182614. It is maintained by State Highway Agency.
INTERSTATE 880 carries INTERSTATE 880 over Up RR San Leandro Creek. The bridge is 430.1 meters long and was built in 1951, with reconstruction in 2014.
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.