US Bridges

Westbound I-40 over Marble Wash

Good

San Bernardino County, California · 08-SBD-040-R80.42 · Structure no. 54 1274L

Built
2007
18 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
8,500
2018 count
Owner
State
State Highway Agency

About this bridge

Westbound I-40 over Marble Wash is a prestressed concrete stringer/multi-beam or girder carrying Westbound I-40 over Marble Wash in San Bernardino County, California. It was built in 2007, so it is 18 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 8,500 vehicles a day, roughly 40% of them trucks, projected to reach 12,726 by 2047. The structure is 106 ft (32.3 m) long and 43 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesWestbound I-40
CrossesMarble Wash
Location08-SBD-040-R80.42
RouteInterstate 40
CountySan Bernardino County
StateCalifornia
Coordinates34.72368, -115.63952
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length106 ft (32.3 m)
Longest span103 ft (31.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,500 (2018)
Projected traffic12,726 by 2047
Trucks40%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 Westbound I-40 over Marble Wash built?

It was built in 2007, making it 18 years old in 2025.

What condition is Westbound I-40 over Marble Wash 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 January 2025.

How much traffic does Westbound I-40 over Marble Wash carry?

About 8,500 vehicles per day (2018 count), of which roughly 40% are trucks.

How long is Westbound I-40 over Marble Wash?

The structure is 106 ft (32.3 m) long with a longest span of 103 ft (31.4 m) and a deck 43 ft wide.

Who owns Westbound I-40 over Marble Wash?

It is owned by the State Highway Agency.