US Bridges

I-40 WB over Holy Moses Wash

Fair

Mohave County, Arizona · 2.2 MI W JCT US 93 · Structure no. 01834

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete Continuous
Length
221 ft
4 main spans
Daily traffic
8,543
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 WB over Holy Moses Wash is a concrete continuous tee beam carrying I-40 WB over Holy Moses Wash in Mohave County, Arizona. It was built in 1980, so it is 45 years old, younger than the Arizona average of 47.8 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 8,543 vehicles a day, roughly 49% of them trucks, projected to reach 8,553 by 2041. The structure is 221 ft (67.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-40 WB
CrossesHoly Moses Wash
Location2.2 MI W JCT US 93
RouteInterstate 40
CountyMohave County
StateArizona
Coordinates35.1622, -114.0755
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length221 ft (67.4 m)
Longest span62 ft (18.9 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,543 (2021)
Projected traffic8,553 by 2041
Trucks49%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 WB over Holy Moses Wash built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-40 WB over Holy Moses 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 December 2024.

How much traffic does I-40 WB over Holy Moses Wash carry?

About 8,543 vehicles per day (2021 count), of which roughly 49% are trucks.

How long is I-40 WB over Holy Moses Wash?

The structure is 221 ft (67.4 m) long with a longest span of 62 ft (18.9 m) and a deck 45 ft wide.

Who owns I-40 WB over Holy Moses Wash?

It is owned by the State Highway Agency.