US Bridges

W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette

Fair

Santa Clara County, California · 04-SCL-237-R6.10-SJS · Structure no. 37 0470K

Built
1994
31 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
447 ft
6 main spans
Daily traffic
12,700
2001 count
Owner
State
State Highway Agency

About this bridge

W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette is a prestressed concrete continuous box beam or girders - multiple carrying W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 12,700 vehicles a day, roughly 5% of them trucks, projected to reach 20,483 by 2042. The structure is 447 ft (136.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesW237-AMERICAN Pkwy
CrossesUP RR AMTRAK Lafayette
Location04-SCL-237-R6.10-SJS
RouteState Highway 237
CountySanta Clara County
StateCalifornia
Coordinates37.41736, -121.97454
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum 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 Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length447 ft (136.2 m)
Longest span87 ft (26.5 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,700 (2001)
Projected traffic20,483 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette built?

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

What condition is W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette carry?

About 12,700 vehicles per day (2001 count), of which roughly 5% are trucks.

How long is W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette?

The structure is 447 ft (136.2 m) long with a longest span of 87 ft (26.5 m) and a deck 28 ft wide.

Who owns W237-AMERICAN Pkwy over UP RR AMTRAK Lafayette?

It is owned by the State Highway Agency.