US Bridges

Interstate 40 over Ply Wash

Fair

San Bernardino County, California · 08-SBD-040-147.76 · Structure no. 54 0562

Built
1957
68 years old, rebuilt 1967
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
7,200
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 40 over Ply Wash is a concrete culvert carrying Interstate 40 over Ply Wash in San Bernardino County, California. It was built in 1957 and reconstructed in 1967, so it is 68 years old, older 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 6 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 7,200 vehicles a day, roughly 46% of them trucks, projected to reach 8,640 by 2041. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesInterstate 40
CrossesPly Wash
Location08-SBD-040-147.76
RouteInterstate 40
CountySan Bernardino County
StateCalifornia
Coordinates34.76803, -114.57868
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2019)
Projected traffic8,640 by 2041
Trucks46%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Interstate 40 over Ply Wash built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1967.

What condition is Interstate 40 over Ply Wash 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 2023.

How much traffic does Interstate 40 over Ply Wash carry?

About 7,200 vehicles per day (2019 count), of which roughly 46% are trucks.

How long is Interstate 40 over Ply Wash?

The structure is 32 ft (9.8 m) long with a longest span of 11 ft (3.4 m).

Who owns Interstate 40 over Ply Wash?

It is owned by the State Highway Agency.