US Bridges

Interstate 280 over 10th & 11th Street

Good

Santa Clara County, California · 04-SCL-280-R1.29-SJS · Structure no. 37 0281

Built
1972
53 years old, rebuilt 2000
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
340 ft
3 main spans
Daily traffic
250,300
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 280 over 10th & 11th Street is a prestressed concrete continuous box beam or girders - multiple carrying Interstate 280 over 10th & 11th Street in Santa Clara County, California. It was built in 1972 and reconstructed in 2000, so it is 53 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250,300 vehicles a day, roughly 3% of them trucks, projected to reach 295,586 by 2045. The structure is 340 ft (103.5 m) long and 164 ft wide.

CarriesInterstate 280
Crosses10th & 11th Street
Location04-SCL-280-R1.29-SJS
RouteInterstate 280
Coordinates37.32878, -121.87102
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length340 ft (103.5 m)
Longest span114 ft (34.8 m)
Deck width164 ft (50 m)
Roadway width160 ft (48.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250,300 (2019)
Projected traffic295,586 by 2045
Trucks3%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 10th & 11th Street built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2000.

What condition is Interstate 280 over 10th & 11th Street in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Interstate 280 over 10th & 11th Street carry?

About 250,300 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Interstate 280 over 10th & 11th Street?

The structure is 340 ft (103.5 m) long with a longest span of 114 ft (34.8 m) and a deck 164 ft wide.

Who owns Interstate 280 over 10th & 11th Street?

It is owned by the State Highway Agency.