US Bridges

U.S. Highway 101 over Guadalupe River

Good

Santa Clara County, California · 04-SCL-101-40.19-SJS · Structure no. 37 0037

Built
1937
88 years old, rebuilt 2005
Condition
Good
inspected February 2025
Type
Tee Beam
Concrete Continuous
Length
142 ft
4 main spans
Daily traffic
134,000
2009 count
Owner
State
State Highway Agency

About this bridge

U.S. Highway 101 over Guadalupe River is a concrete continuous tee beam carrying U.S. Highway 101 over Guadalupe River in Santa Clara County, California. It was built in 1937 and reconstructed in 2005, so it is 88 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 134,000 vehicles a day, roughly 4% of them trucks, projected to reach 218,610 by 2045. The structure is 142 ft (43.3 m) long and 174 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesU.S. Highway 101
CrossesGuadalupe River
Location04-SCL-101-40.19-SJS
RouteU.S. Route 101
Coordinates37.37513, -121.93248
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length142 ft (43.3 m)
Longest span40 ft (12.2 m)
Deck width174 ft (53.1 m)
Roadway width171 ft (52.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic134,000 (2009)
Projected traffic218,610 by 2045
Trucks4%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 U.S. Highway 101 over Guadalupe River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 2005.

What condition is U.S. Highway 101 over Guadalupe River 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 February 2025.

How much traffic does U.S. Highway 101 over Guadalupe River carry?

About 134,000 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is U.S. Highway 101 over Guadalupe River?

The structure is 142 ft (43.3 m) long with a longest span of 40 ft (12.2 m) and a deck 174 ft wide.

Who owns U.S. Highway 101 over Guadalupe River?

It is owned by the State Highway Agency.