US Bridges

Interstate 280 over Stevens Creek Boulevard

Fair

Santa Clara County, California · 04-SCL-280-7.39-SCL · Structure no. 37 0211

Built
1965
60 years old, rebuilt 1991
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
322 ft
2 main spans
Daily traffic
158,000
2010 count
Owner
State
State Highway Agency

About this bridge

Interstate 280 over Stevens Creek Boulevard is a prestressed concrete stringer/multi-beam or girder carrying Interstate 280 over Stevens Creek Boulevard in Santa Clara County, California. It was built in 1965 and reconstructed in 1991, so it is 60 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 6 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 158,000 vehicles a day, roughly 3% of them trucks, projected to reach 298,123 by 2046. The structure is 322 ft (98.1 m) long and 155 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesInterstate 280
CrossesStevens Creek Boulevard
Location04-SCL-280-7.39-SCL
RouteInterstate 280
Coordinates37.32278, -121.99885
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 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 rating76.1 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length322 ft (98.1 m)
Longest span112 ft (34.1 m)
Deck width155 ft (47.2 m)
Roadway width149 ft (45.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158,000 (2010)
Projected traffic298,123 by 2046
Trucks3%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 280 over Stevens Creek Boulevard built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1991.

What condition is Interstate 280 over Stevens Creek Boulevard 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 January 2024.

How much traffic does Interstate 280 over Stevens Creek Boulevard carry?

About 158,000 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is Interstate 280 over Stevens Creek Boulevard?

The structure is 322 ft (98.1 m) long with a longest span of 112 ft (34.1 m) and a deck 155 ft wide.

Who owns Interstate 280 over Stevens Creek Boulevard?

It is owned by the State Highway Agency.