US Bridges

I-40 over Equipment Pass

Good

Navajo County, Arizona · 6.8 MI W JCT SR 77 · Structure no. 06640

Built
1977
48 years old
Condition
Good
inspected June 2021
Type
Culvert
Steel
Length
31 ft
1 main span
Daily traffic
12,774
2020 count
Owner
State
State Highway Agency

About this bridge

I-40 over Equipment Pass is a steel culvert carrying I-40 over Equipment Pass in Navajo County, Arizona. It was built in 1977, so it is 48 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,774 vehicles a day, roughly 52% of them trucks, projected to reach 12,784 by 2040. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-40
CrossesEquipment Pass
Location6.8 MI W JCT SR 77
RouteInterstate 40
CountyNavajo County
StateArizona
Coordinates34.90905, -110.17793
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span27 ft (8.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,774 (2020)
Projected traffic12,784 by 2040
Trucks52%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 over Equipment Pass built?

It was built in 1977, making it 48 years old in 2025.

What condition is I-40 over Equipment Pass 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 June 2021.

How much traffic does I-40 over Equipment Pass carry?

About 12,774 vehicles per day (2020 count), of which roughly 52% are trucks.

How long is I-40 over Equipment Pass?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.2 m).

Who owns I-40 over Equipment Pass?

It is owned by the State Highway Agency.