US Bridges

IRR SR 87 over Coyote Wash

Fair

Navajo County, Arizona · 29.1 MI N JCT I-40 · Structure no. 00898

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
4 main spans
Daily traffic
2,376
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 87 over Coyote Wash is a prestressed concrete stringer/multi-beam or girder carrying IRR SR 87 over Coyote Wash in Navajo County, Arizona. It was built in 1965, so it is 60 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 2,376 vehicles a day, roughly 5% of them trucks, projected to reach 2,386 by 2042. The structure is 140 ft (42.7 m) long and 34 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesIRR SR 87
CrossesCoyote Wash
Location29.1 MI N JCT I-40
RouteState Highway 87
CountyNavajo County
StateArizona
Coordinates35.35881, -110.42458
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span35 ft (10.7 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,376 (2022)
Projected traffic2,386 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 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 IRR SR 87 over Coyote Wash built?

It was built in 1965, making it 60 years old in 2025.

What condition is IRR SR 87 over Coyote 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 July 2024.

How much traffic does IRR SR 87 over Coyote Wash carry?

About 2,376 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is IRR SR 87 over Coyote Wash?

The structure is 140 ft (42.7 m) long with a longest span of 35 ft (10.7 m) and a deck 34 ft wide.

Who owns IRR SR 87 over Coyote Wash?

It is owned by the State Highway Agency.