US Bridges

SB State Route 85 over San Tomas Aquino Creek

Good

Santa Clara County, California · 04-SCL-085-R12.68-CMB · Structure no. 37 0524L

Built
1994
31 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
57,500
2009 count
Owner
State
State Highway Agency

About this bridge

SB State Route 85 over San Tomas Aquino Creek is a prestressed concrete box beam or girders - multiple carrying SB State Route 85 over San Tomas Aquino Creek 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 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 57,500 vehicles a day, roughly 3% of them trucks, projected to reach 78,315 by 2044. The structure is 105 ft (32 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB State Route 85
CrossesSan Tomas Aquino Creek
Location04-SCL-085-R12.68-CMB
RouteState Highway 85
Coordinates37.26952, -121.99046
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length105 ft (32 m)
Longest span101 ft (30.8 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,500 (2009)
Projected traffic78,315 by 2044
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SB State Route 85 over San Tomas Aquino Creek built?

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

What condition is SB State Route 85 over San Tomas Aquino Creek 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 August 2024.

How much traffic does SB State Route 85 over San Tomas Aquino Creek carry?

About 57,500 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is SB State Route 85 over San Tomas Aquino Creek?

The structure is 105 ft (32 m) long with a longest span of 101 ft (30.8 m) and a deck 59 ft wide.

Who owns SB State Route 85 over San Tomas Aquino Creek?

It is owned by the State Highway Agency.