US Bridges

I-40 over I-40

Good

Navajo County, Arizona · 14.8 MI W JCT SR 77 · Structure no. 20102

Built
2016
9 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
143 ft
6 main spans
Daily traffic
11,572
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 over I-40 is a concrete continuous slab carrying I-40 over I-40 in Navajo County, Arizona. It was built in 2016, so it is 9 years old, younger 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 11,572 vehicles a day, roughly 42% of them trucks, projected to reach 11,582 by 2041. The structure is 143 ft (43.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-40
CrossesI-40
Location14.8 MI W JCT SR 77
RouteInterstate 40
CountyNavajo County
StateArizona
Coordinates34.9464, -110.2961
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating84 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length143 ft (43.6 m)
Longest span25 ft (7.6 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,572 (2021)
Projected traffic11,582 by 2041
Trucks42%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 over I-40 built?

It was built in 2016, making it 9 years old in 2025.

What condition is I-40 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 June 2023.

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

About 11,572 vehicles per day (2021 count), of which roughly 42% are trucks.

How long is I-40 over I-40?

The structure is 143 ft (43.6 m) long with a longest span of 25 ft (7.6 m) and a deck 45 ft wide.

Who owns I-40 over I-40?

It is owned by the State Highway Agency.