US Bridges

NB State Route 85 over Manassas Road

Good

Santa Clara County, California · 04-SCL-085-0.93-SJS · Structure no. 37 0489R

Built
1992
33 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
40,500
2009 count
Owner
State
State Highway Agency

About this bridge

NB State Route 85 over Manassas Road is a prestressed concrete box beam or girders - multiple carrying NB State Route 85 over Manassas Road in Santa Clara County, California. It was built in 1992, so it is 33 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40,500 vehicles a day, projected to reach 68,970 by 2041. The structure is 134 ft (40.8 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB State Route 85
CrossesManassas Road
Location04-SCL-085-0.93-SJS
RouteState Highway 85
CountySanta Clara County
StateCalifornia
Coordinates37.23966, -121.78885
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length134 ft (40.8 m)
Longest span129 ft (39.3 m)
Deck width58 ft (17.7 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,500 (2009)
Projected traffic68,970 by 2041
Trucks0%
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 85 over Manassas Road built?

It was built in 1992, making it 33 years old in 2025.

What condition is NB State Route 85 over Manassas Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does NB State Route 85 over Manassas Road carry?

About 40,500 vehicles per day (2009 count).

How long is NB State Route 85 over Manassas Road?

The structure is 134 ft (40.8 m) long with a longest span of 129 ft (39.3 m) and a deck 58 ft wide.

Who owns NB State Route 85 over Manassas Road?

It is owned by the State Highway Agency.