US Bridges

OFF-RAMP/I280-N87 over N Almaden Boulevard

Fair

Santa Clara County, California · 04-SCL-087-6.00-SJS · Structure no. 37 0312G

Built
1988
37 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
150 ft
1 main span
Daily traffic
15,900
2001 count
Owner
State
State Highway Agency

About this bridge

OFF-RAMP/I280-N87 over N Almaden Boulevard is a prestressed concrete box beam or girders - multiple carrying OFF-RAMP/I280-N87 over N Almaden Boulevard in Santa Clara County, California. It was built in 1988, so it is 37 years old, younger 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 15,900 vehicles a day, roughly 3% of them trucks, projected to reach 21,519 by 2042. The structure is 150 ft (45.8 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOFF-RAMP/I280-N87
CrossesN Almaden Boulevard
Location04-SCL-087-6.00-SJS
RouteState Highway 87
CountySanta Clara County
StateCalifornia
Coordinates37.33507, -121.89687
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionJanuary 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length150 ft (45.8 m)
Longest span149 ft (45.3 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,900 (2001)
Projected traffic21,519 by 2042
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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 OFF-RAMP/I280-N87 over N Almaden Boulevard built?

It was built in 1988, making it 37 years old in 2025.

What condition is OFF-RAMP/I280-N87 over N Almaden 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 OFF-RAMP/I280-N87 over N Almaden Boulevard carry?

About 15,900 vehicles per day (2001 count), of which roughly 3% are trucks.

How long is OFF-RAMP/I280-N87 over N Almaden Boulevard?

The structure is 150 ft (45.8 m) long with a longest span of 149 ft (45.3 m) and a deck 65 ft wide.

Who owns OFF-RAMP/I280-N87 over N Almaden Boulevard?

It is owned by the State Highway Agency.