US Bridges

Alum Rock Ave over Silver Creek

Good

Santa Clara County, California · 10 Ft SW of Checkers DR · Structure no. 37C0729

Built
2006
19 years old
Condition
Good
inspected April 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
28,500
2009 count
Owner
City
City or Municipal Highway Agency

About this bridge

Alum Rock Ave over Silver Creek is a prestressed concrete box beam or girders - multiple carrying Alum Rock Ave over Silver Creek in Santa Clara County, California. It was built in 2006, so it is 19 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 28,500 vehicles a day, roughly 2% of them trucks, projected to reach 45,608 by 2044. The structure is 61 ft (18.7 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAlum Rock Ave
CrossesSilver Creek
Location10 Ft SW of Checkers DR
RouteCity Street 0
CountySanta Clara County
StateCalifornia
Coordinates37.3552, -121.85018
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable 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 length61 ft (18.7 m)
Longest span60 ft (18.2 m)
Deck width100 ft (30.5 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,500 (2009)
Projected traffic45,608 by 2044
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Alum Rock Ave over Silver Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Alum Rock Ave over Silver 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 April 2022.

How much traffic does Alum Rock Ave over Silver Creek carry?

About 28,500 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is Alum Rock Ave over Silver Creek?

The structure is 61 ft (18.7 m) long with a longest span of 60 ft (18.2 m) and a deck 100 ft wide.

Who owns Alum Rock Ave over Silver Creek?

It is owned by the City or Municipal Highway Agency.