US Bridges

I 280 over San Jose & Sickles Ave

Poor

San Francisco County, California · 04-SF-280-R0.71-SF · Structure no. 34 0085

Built
1964
61 years old, rebuilt 1971
Condition
Poor
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
476 ft
8 main spans
Daily traffic
166,000
2019 count
Owner
State
State Highway Agency

About this bridge

I 280 over San Jose & Sickles Ave is a concrete continuous box beam or girders - multiple carrying I 280 over San Jose & Sickles Ave in San Francisco County, California. It was built in 1964 and reconstructed in 1971, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 166,000 vehicles a day, roughly 1% of them trucks, projected to reach 225,390 by 2044. The structure is 476 ft (145.1 m) long and 137 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 280
CrossesSan Jose & Sickles Ave
Location04-SF-280-R0.71-SF
RouteInterstate 280
Coordinates37.71043, -122.45707
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.8 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length476 ft (145.1 m)
Longest span96 ft (29.4 m)
Deck width137 ft (41.7 m)
Roadway width132 ft (40.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166,000 (2019)
Projected traffic225,390 by 2044
Trucks1%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10.1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 280 over San Jose & Sickles Ave built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1971.

What condition is I 280 over San Jose & Sickles Ave in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does I 280 over San Jose & Sickles Ave carry?

About 166,000 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is I 280 over San Jose & Sickles Ave?

The structure is 476 ft (145.1 m) long with a longest span of 96 ft (29.4 m) and a deck 137 ft wide.

Who owns I 280 over San Jose & Sickles Ave?

It is owned by the State Highway Agency.