US Bridges

NB State Route 87 over NB87 SB280 NB680 On-Ramp

Fair

Santa Clara County, California · 04-SCL-087-4.23-SJS · Structure no. 37 0421R

Built
1990
35 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
186 ft
3 main spans
Daily traffic
65,000
2009 count
Owner
State
State Highway Agency

About this bridge

NB State Route 87 over NB87 SB280 NB680 On-Ramp is a prestressed concrete continuous box beam or girders - multiple carrying NB State Route 87 over NB87 SB280 NB680 On-Ramp in Santa Clara County, California. It was built in 1990, so it is 35 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 65,000 vehicles a day, roughly 3% of them trucks, projected to reach 93,751 by 2045. The structure is 186 ft (56.7 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB State Route 87
CrossesNB87 SB280 NB680 On-Ramp
Location04-SCL-087-4.23-SJS
RouteState Highway 87
CountySanta Clara County
StateCalifornia
Coordinates37.31234, -121.88482
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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 geometry6: Equal to present minimum 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 Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length186 ft (56.7 m)
Longest span77 ft (23.5 m)
Deck width57 ft (17.3 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,000 (2009)
Projected traffic93,751 by 2045
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 NB State Route 87 over NB87 SB280 NB680 On-Ramp built?

It was built in 1990, making it 35 years old in 2025.

What condition is NB State Route 87 over NB87 SB280 NB680 On-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 2023.

How much traffic does NB State Route 87 over NB87 SB280 NB680 On-Ramp carry?

About 65,000 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is NB State Route 87 over NB87 SB280 NB680 On-Ramp?

The structure is 186 ft (56.7 m) long with a longest span of 77 ft (23.5 m) and a deck 57 ft wide.

Who owns NB State Route 87 over NB87 SB280 NB680 On-Ramp?

It is owned by the State Highway Agency.