US Bridges

Union Avenue over State Route 85

Fair

Santa Clara County, California · 04-SCL-085-9.28-SJS · Structure no. 37 0514

Built
1994
31 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
237 ft
2 main spans
Daily traffic
17,800
2000 count
Owner
State
State Highway Agency

About this bridge

Union Avenue over State Route 85 is a prestressed concrete continuous box beam or girders - multiple carrying Union Avenue over State Route 85 in Santa Clara County, California. It was built in 1994, so it is 31 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 17,800 vehicles a day, roughly 1% of them trucks, projected to reach 28,632 by 2041. The structure is 237 ft (72.1 m) long and 103 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUnion Avenue
CrossesState Route 85
Location04-SCL-085-9.28-SJS
RouteCity Street 0
CountySanta Clara County
StateCalifornia
Coordinates37.25065, -121.93116
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans2
Design loadHS 20 + Mod
Structure length237 ft (72.1 m)
Longest span132 ft (40.3 m)
Deck width103 ft (31.4 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,800 (2000)
Projected traffic28,632 by 2041
Trucks1%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Union Avenue over State Route 85 built?

It was built in 1994, making it 31 years old in 2025.

What condition is Union Avenue over State Route 85 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 September 2023.

How much traffic does Union Avenue over State Route 85 carry?

About 17,800 vehicles per day (2000 count), of which roughly 1% are trucks.

How long is Union Avenue over State Route 85?

The structure is 237 ft (72.1 m) long with a longest span of 132 ft (40.3 m) and a deck 103 ft wide.

Who owns Union Avenue over State Route 85?

It is owned by the State Highway Agency.