US Bridges

NB State Route 85 over Oka Road

Fair

Santa Clara County, California · 04-SCL-085-R10.60-LGTS · Structure no. 37 0537R

Built
1994
31 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
61,000
2009 count
Owner
State
State Highway Agency

About this bridge

NB State Route 85 over Oka Road is a prestressed concrete box beam or girders - multiple carrying NB State Route 85 over Oka Road 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 6 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 61,000 vehicles a day, projected to reach 91,772 by 2046. The structure is 99 ft (30.2 m) long and 57 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesNB State Route 85
CrossesOka Road
Location04-SCL-085-R10.60-LGTS
RouteState Highway 85
CountySanta Clara County
StateCalifornia
Coordinates37.25661, -121.95781
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than 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
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length99 ft (30.2 m)
Longest span94 ft (28.8 m)
Deck width57 ft (17.5 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61,000 (2009)
Projected traffic91,772 by 2046
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 85 over Oka Road built?

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

What condition is NB State Route 85 over Oka Road 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 NB State Route 85 over Oka Road carry?

About 61,000 vehicles per day (2009 count).

How long is NB State Route 85 over Oka Road?

The structure is 99 ft (30.2 m) long with a longest span of 94 ft (28.8 m) and a deck 57 ft wide.

Who owns NB State Route 85 over Oka Road?

It is owned by the State Highway Agency.