US Bridges

U.S. HWY 101 (nb) over UP RR & AMTRAK

Good

Santa Clara County, California · 04-SCL-101-R5.08 · Structure no. 37 0305R

Built
1973
52 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
281 ft
3 main spans
Daily traffic
26,000
2009 count
Owner
State
State Highway Agency

About this bridge

U.S. HWY 101 (nb) over UP RR & AMTRAK is a concrete continuous box beam or girders - multiple carrying U.S. HWY 101 (nb) over UP RR & AMTRAK in Santa Clara County, California. It was built in 1973, so it is 52 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 26,000 vehicles a day, roughly 8% of them trucks, projected to reach 66,313 by 2046. The structure is 281 ft (85.6 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesU.S. HWY 101 (nb)
CrossesUP RR & AMTRAK
Location04-SCL-101-R5.08
RouteU.S. Route 101
CountySanta Clara County
StateCalifornia
Coordinates36.98856, -121.55781
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating62.2 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length281 ft (85.6 m)
Longest span119 ft (36.3 m)
Deck width53 ft (16.2 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,000 (2009)
Projected traffic66,313 by 2046
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was U.S. HWY 101 (nb) over UP RR & AMTRAK built?

It was built in 1973, making it 52 years old in 2025.

What condition is U.S. HWY 101 (nb) over UP RR & AMTRAK 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 October 2024.

How much traffic does U.S. HWY 101 (nb) over UP RR & AMTRAK carry?

About 26,000 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is U.S. HWY 101 (nb) over UP RR & AMTRAK?

The structure is 281 ft (85.6 m) long with a longest span of 119 ft (36.3 m) and a deck 53 ft wide.

Who owns U.S. HWY 101 (nb) over UP RR & AMTRAK?

It is owned by the State Highway Agency.