SR 87; NB over Wash

Good

Navajo County, Arizona · 0.6 MI E JCT SR B40 · Structure no. 04260

Built: 1954; 71 years old
Condition: Good; inspected May 2023
Type: Culvert; Concrete Continuous
Length: 54 ft; 5 main spans
Daily traffic: 431; 2021 count
Owner: State; State Highway Agency

About this bridge

SR 87; NB over Wash is a concrete continuous culvert carrying SR 87; NB over Wash in Navajo County, Arizona. It was built in 1954, so it is 71 years old, older than the Arizona average of 47.8 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 431 vehicles a day, roughly 24% of them trucks, projected to reach 441 by 2041. The structure is 54 ft (16.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 87; NB

CrossesWash

Location0.6 MI E JCT SR B40

RouteState Highway 87

CountyNavajo County

StateArizona

Coordinates35.01031, -110.66743

Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionMay 2023

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Deck geometry9: Superior to present desirable criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating58 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans5

Design loadHS 20

Structure length54 ft (16.5 m)

Longest span10 ft (3 m)

Deck width45 ft (13.7 m)

Roadway width43 ft (13 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic431 (2021)

Projected traffic441 by 2041

Trucks24%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.2 mi (2 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 87; NB over Wash built?

It was built in 1954, making it 71 years old in 2025.

What condition is SR 87; NB over 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 May 2023.

How much traffic does SR 87; NB over Wash carry?

About 431 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is SR 87; NB over Wash?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m) and a deck 45 ft wide.

Who owns SR 87; NB over Wash?

It is owned by the State Highway Agency.