US Bridges

Baden Street over RTE I 280 BART Tunnels

Fair

San Francisco County, California · 04-SF-280-R2.47-SF · Structure no. 34 0083

Built
1964
61 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
189 ft
2 main spans
Daily traffic
400
2019 count
Owner
State
State Highway Agency

About this bridge

Baden Street over RTE I 280 BART Tunnels is a concrete continuous box beam or girders - multiple carrying Baden Street over RTE I 280 BART Tunnels in San Francisco County, California. It was built in 1964, so it is 61 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 684 by 2044. The structure is 189 ft (57.6 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBaden Street
CrossesRTE I 280 BART Tunnels
Location04-SF-280-R2.47-SF
RouteCity Street 0
Coordinates37.73022, -122.43975
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating22.2 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length189 ft (57.6 m)
Longest span99 ft (30.2 m)
Deck width58 ft (17.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2019)
Projected traffic684 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Baden Street over RTE I 280 BART Tunnels built?

It was built in 1964, making it 61 years old in 2025.

What condition is Baden Street over RTE I 280 BART Tunnels in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does Baden Street over RTE I 280 BART Tunnels carry?

About 400 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Baden Street over RTE I 280 BART Tunnels?

The structure is 189 ft (57.6 m) long with a longest span of 99 ft (30.2 m) and a deck 58 ft wide.

Who owns Baden Street over RTE I 280 BART Tunnels?

It is owned by the State Highway Agency.