US Bridges

IRR SR 87 over I-40

Good

Navajo County, Arizona · JCT I-40 · Structure no. 01598

Built
1972
53 years old, rebuilt 2016
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
251 ft
2 main spans
Daily traffic
2,401
2021 count
Owner
State
State Highway Agency

About this bridge

IRR SR 87 over I-40 is a concrete continuous box beam or girders - single or spread carrying IRR SR 87 over I-40 in Navajo County, Arizona. It was built in 1972 and reconstructed in 2016, so it is 53 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 2,401 vehicles a day, roughly 10% of them trucks, projected to reach 2,411 by 2041. The structure is 251 ft (76.5 m) long and 37 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

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CarriesIRR SR 87
CrossesI-40
LocationJCT I-40
RouteState Highway 87
CountyNavajo County
StateArizona
Coordinates35.0085, -110.6418
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length251 ft (76.5 m)
Longest span123 ft (37.5 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,401 (2021)
Projected traffic2,411 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed39.8 mi (64 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR SR 87 over I-40 built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2016.

What condition is IRR SR 87 over I-40 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 IRR SR 87 over I-40 carry?

About 2,401 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is IRR SR 87 over I-40?

The structure is 251 ft (76.5 m) long with a longest span of 123 ft (37.5 m) and a deck 37 ft wide.

Who owns IRR SR 87 over I-40?

It is owned by the State Highway Agency.