US Bridges

I-40 WB over Leroux Wash

Fair

Navajo County, Arizona · 8.8 MI W JCT SR 77 · Structure no. 01773

Built
1977
48 years old, rebuilt 2015
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
439 ft
6 main spans
Daily traffic
11,092
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 WB over Leroux Wash is a prestressed concrete box beam or girders - multiple carrying I-40 WB over Leroux Wash in Navajo County, Arizona. It was built in 1977 and reconstructed in 2015, so it is 48 years old, older 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 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 11,092 vehicles a day, roughly 40% of them trucks, projected to reach 11,102 by 2041. The structure is 439 ft (133.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-40 WB
CrossesLeroux Wash
Location8.8 MI W JCT SR 77
RouteInterstate 40
CountyNavajo County
StateArizona
Coordinates34.9061, -110.2005
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length439 ft (133.8 m)
Longest span73 ft (22.3 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,092 (2021)
Projected traffic11,102 by 2041
Trucks40%
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 Leroux Wash built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2015.

What condition is I-40 WB over Leroux 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 June 2023.

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

About 11,092 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is I-40 WB over Leroux Wash?

The structure is 439 ft (133.8 m) long with a longest span of 73 ft (22.3 m) and a deck 44 ft wide.

Who owns I-40 WB over Leroux Wash?

It is owned by the State Highway Agency.