US Bridges

SR 87; NB over Wash

Fair

Navajo County, Arizona · 0.8 MI E JCT SR B40 · Structure no. 04262

Built
1939
86 years old, rebuilt 1954
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
43 ft
4 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 1939 and reconstructed in 1954, so it is 86 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 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 431 vehicles a day, roughly 24% of them trucks, projected to reach 441 by 2041. The structure is 43 ft (13.1 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 87; NB
CrossesWash
Location0.8 MI E JCT SR B40
RouteState Highway 87
CountyNavajo County
StateArizona
Coordinates35.00874, -110.66338
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width43 ft (13.1 m)
Roadway width41 ft (12.5 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 1939, making it 86 years old in 2025. It was reconstructed in 1954.

What condition is SR 87; NB over 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 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 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 43 ft wide.

Who owns SR 87; NB over Wash?

It is owned by the State Highway Agency.