US Bridges

Cox Avenue over State Route 85

Fair

Santa Clara County, California · 04-SCL-085-R14.28 · Structure no. 37 0483

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
250 ft
2 main spans
Daily traffic
10,500
2004 count
Owner
State
State Highway Agency

About this bridge

Cox Avenue over State Route 85 is a prestressed concrete continuous box beam or girders - multiple carrying Cox Avenue over State Route 85 in Santa Clara County, California. It was built in 1991, so it is 34 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 10,500 vehicles a day, roughly 1% of them trucks, projected to reach 16,947 by 2046. The structure is 250 ft (76.2 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCox Avenue
CrossesState Route 85
Location04-SCL-085-R14.28
RouteCounty Highway 0
CountySanta Clara County
StateCalifornia
Coordinates37.28259, -122.01541
Functional classUrban Local

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 inspectionAugust 2024
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 rating89 US tons
Inventory rating68.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length250 ft (76.2 m)
Longest span123 ft (37.5 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2004)
Projected traffic16,947 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 Cox Avenue over State Route 85 built?

It was built in 1991, making it 34 years old in 2025.

What condition is Cox 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 August 2024.

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

About 10,500 vehicles per day (2004 count), of which roughly 1% are trucks.

How long is Cox Avenue over State Route 85?

The structure is 250 ft (76.2 m) long with a longest span of 123 ft (37.5 m) and a deck 52 ft wide.

Who owns Cox Avenue over State Route 85?

It is owned by the State Highway Agency.