US Bridges

I 40; EB over Johnson Canyon

Good

Coconino County, Arizona · 2.5 MI E JCT SR 89 · Structure no. 00808

Built
1965
60 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
8,931
2021 count
Owner
State
State Highway Agency

About this bridge

I 40; EB over Johnson Canyon is a concrete continuous slab carrying I 40; EB over Johnson Canyon in Coconino County, Arizona. It was built in 1965, so it is 60 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 8,931 vehicles a day, roughly 24% of them trucks, projected to reach 8,941 by 2041. The structure is 52 ft (15.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 40; EB
CrossesJohnson Canyon
Location2.5 MI E JCT SR 89
RouteInterstate 40
CountyCoconino County
StateArizona
Coordinates35.2144, -112.4283
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,931 (2021)
Projected traffic8,941 by 2041
Trucks24%
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; EB over Johnson Canyon built?

It was built in 1965, making it 60 years old in 2025.

What condition is I 40; EB over Johnson Canyon 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 September 2024.

How much traffic does I 40; EB over Johnson Canyon carry?

About 8,931 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is I 40; EB over Johnson Canyon?

The structure is 52 ft (15.8 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns I 40; EB over Johnson Canyon?

It is owned by the State Highway Agency.