US Bridges

I-40 WB over Adamana RD

Good

Navajo County, Arizona · 29.8 MI W JCT US 191 · Structure no. 00544

Built
1960
65 years old
Condition
Good
inspected June 2023
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
9,069
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 WB over Adamana RD is a concrete frame carrying I-40 WB over Adamana RD in Navajo County, Arizona. It was built in 1960, so it is 65 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 9,069 vehicles a day, roughly 48% of them trucks, projected to reach 9,079 by 2041. The structure is 29 ft (8.8 m) long and 40 ft wide.

CarriesI-40 WB
CrossesAdamana RD
Location29.8 MI W JCT US 191
RouteInterstate 40
StateArizona
Coordinates35.00068, -109.90077
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span25 ft (7.6 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,069 (2021)
Projected traffic9,079 by 2041
Trucks48%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 WB over Adamana RD built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-40 WB over Adamana RD 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 WB over Adamana RD carry?

About 9,069 vehicles per day (2021 count), of which roughly 48% are trucks.

How long is I-40 WB over Adamana RD?

The structure is 29 ft (8.8 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.

Who owns I-40 WB over Adamana RD?

It is owned by the State Highway Agency.