US Bridges

Arastradero Road over Los Trancos Creek

Good

Santa Clara County, California · 0.03 MI E/O Alpine RD · Structure no. 37C0513

Built
1955
70 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
2,760
2015 count
Owner
County
County Highway Agency

About this bridge

Arastradero Road over Los Trancos Creek is a concrete tee beam carrying Arastradero Road over Los Trancos Creek in Santa Clara County, California. It was built in 1955, so it is 70 years old, older 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 2,760 vehicles a day, roughly 5% of them trucks, projected to reach 3,265 by 2040. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesArastradero Road
CrossesLos Trancos Creek
Location0.03 MI E/O Alpine RD
RouteCounty Highway 0
Coordinates37.38287, -122.19311
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating23.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,760 (2015)
Projected traffic3,265 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Arastradero Road over Los Trancos Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Arastradero Road over Los Trancos 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 September 2023.

How much traffic does Arastradero Road over Los Trancos Creek carry?

About 2,760 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Arastradero Road over Los Trancos Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Arastradero Road over Los Trancos Creek?

It is owned by the County Highway Agency.