US Bridges

SR 77 over Leroux Wash

Fair

Navajo County, Arizona · 6.2 MI N JCT I-40 · Structure no. 02733

Built
2002
23 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
352 ft
10 main spans
Daily traffic
1,442
2021 count
Owner
State
State Highway Agency

About this bridge

SR 77 over Leroux Wash is a concrete continuous slab carrying SR 77 over Leroux Wash in Navajo County, Arizona. It was built in 2002, so it is 23 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 1,442 vehicles a day, roughly 11% of them trucks, projected to reach 1,452 by 2041. The structure is 352 ft (107.3 m) long and 47 ft wide. If it were closed, the detour would be 73.9 mi (119 km).

Location

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CarriesSR 77
CrossesLeroux Wash
Location6.2 MI N JCT I-40
RouteState Highway 77
CountyNavajo County
StateArizona
Coordinates35.06222, -110.09778
Functional classRural Major Collector

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating71 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length352 ft (107.3 m)
Longest span35 ft (10.7 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,442 (2021)
Projected traffic1,452 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed73.9 mi (119 km)
TollOn a free road
National Highway SystemNo

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 SR 77 over Leroux Wash built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR 77 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 May 2023.

How much traffic does SR 77 over Leroux Wash carry?

About 1,442 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SR 77 over Leroux Wash?

The structure is 352 ft (107.3 m) long with a longest span of 35 ft (10.7 m) and a deck 47 ft wide.

Who owns SR 77 over Leroux Wash?

It is owned by the State Highway Agency.