I 280N (RE AL)
I 280N (RE AL) in 04-Sf-280-R4.07r-Sf, San Francisco County, California received a condition grade of C (48/100). Built in 1960, the bridge carries 170K vehicles daily on I 280N (RE AL) over 280/101 Interchange.
I 280N (RE AL) carries a C on the BridgeSafety Condition Score with 48/100. 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 1960 and is now 66 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. I 280N (RE AL) carries an average daily traffic count of 170,000 vehicles, with 4 lane(s) crossing 280/101 Interchange. 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
I 280N (RE AL) is a 66-year-old bridge located 04-Sf-280-R4.07r-Sf in San Francisco County, California. The bridge carries I 280N (RE AL) over 280/101 Interchange with 4 traffic lanes, handling approximately 170K vehicles per day. Built in 1960, the structure spans 150.6 meters.
The bridge received a Condition Grade of C (48/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 5/9 (fair), and substructure 5/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I 280N (RE AL) has a Condition Score of 48/100 (Grade C). Its deck is rated 5/9, superstructure 5/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
I 280N (RE AL) was built in 1960, making it 66 years old. The average bridge age in the United States is 48 years.
I 280N (RE AL) carries approximately 170K vehicles per day (average daily traffic). The bridge has 4 traffic lanes. It is 150.6 meters long and located on I 280N (RE AL) in 04-Sf-280-R4.07r-Sf, San Francisco County, California.
No, I 280N (RE AL) is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I 280N (RE AL) is located 04-Sf-280-R4.07r-Sf in San Francisco County, California. The bridge carries I 280N (RE AL) over 280/101 Interchange. Its coordinates are 37.733503, -122.411164. It is maintained by State Highway Agency.
I 280N (RE AL) carries I 280N (RE AL) over 280/101 Interchange. The bridge is 150.6 meters long and was built in 1960.
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.