US Bridges

I-40 EB over Maple ST

Good

Navajo County, Arizona · 2.7 MI W JCT SR 87 · Structure no. 01777

Built
1979
46 years old, rebuilt 2014
Condition
Good
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
12,567
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 EB over Maple ST is a concrete continuous tee beam carrying I-40 EB over Maple ST in Navajo County, Arizona. It was built in 1979 and reconstructed in 2014, so it is 46 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 12,567 vehicles a day, roughly 45% of them trucks, projected to reach 12,577 by 2041. The structure is 113 ft (34.4 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 EB
CrossesMaple ST
Location2.7 MI W JCT SR 87
RouteInterstate 40
CountyNavajo County
StateArizona
Coordinates35.02454, -110.68202
Functional classUrban 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.
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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating68 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length113 ft (34.4 m)
Longest span45 ft (13.7 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,567 (2021)
Projected traffic12,577 by 2041
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 EB over Maple ST built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2014.

What condition is I-40 EB over Maple ST 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 I-40 EB over Maple ST carry?

About 12,567 vehicles per day (2021 count), of which roughly 45% are trucks.

How long is I-40 EB over Maple ST?

The structure is 113 ft (34.4 m) long with a longest span of 45 ft (13.7 m) and a deck 45 ft wide.

Who owns I-40 EB over Maple ST?

It is owned by the State Highway Agency.