US Bridges

San Jose Ave over SB 280 Off-Ramp

Fair

San Francisco County, California · 04-SF-280-R0.90-SF · Structure no. 34 0086

Built
1964
61 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
126 ft
3 main spans
Daily traffic
8,433
2019 count
Owner
State
State Highway Agency

About this bridge

San Jose Ave over SB 280 Off-Ramp is a concrete continuous box beam or girders - multiple carrying San Jose Ave over SB 280 Off-Ramp 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 8,433 vehicles a day, roughly 2% of them trucks, projected to reach 7,990 by 2044. The structure is 126 ft (38.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSan Jose Ave
CrossesSB 280 Off-Ramp
Location04-SF-280-R0.90-SF
RouteCity Street 0D012
CountySan Francisco County
StateCalifornia
Coordinates37.71237, -122.45398
Functional classUrban Other Principal Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span53 ft (16.2 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,433 (2019)
Projected traffic7,990 by 2044
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 San Jose Ave over SB 280 Off-Ramp built?

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

What condition is San Jose Ave over SB 280 Off-Ramp 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 San Jose Ave over SB 280 Off-Ramp carry?

About 8,433 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is San Jose Ave over SB 280 Off-Ramp?

The structure is 126 ft (38.4 m) long with a longest span of 53 ft (16.2 m) and a deck 40 ft wide.

Who owns San Jose Ave over SB 280 Off-Ramp?

It is owned by the State Highway Agency.