US Bridges

I 40; EB over Lone Tree Road

Fair

Coconino County, Arizona · 0.8 E JCT I 17 · Structure no. 01180

Built
1966
59 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
107 ft
3 main spans
Daily traffic
21,123
2024 count
Owner
State
State Highway Agency

About this bridge

I 40; EB over Lone Tree Road is a concrete continuous slab carrying I 40; EB over Lone Tree Road in Coconino County, Arizona. It was built in 1966, so it is 59 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 21,123 vehicles a day, roughly 28% of them trucks, projected to reach 21,133 by 2042. The structure is 107 ft (32.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 40; EB
CrossesLone Tree Road
Location0.8 E JCT I 17
RouteInterstate 40
CountyCoconino County
StateArizona
Coordinates35.1725, -111.6484
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span40 ft (12.2 m)
Deck width41 ft (12.4 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,123 (2024)
Projected traffic21,133 by 2042
Trucks28%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 40; EB over Lone Tree Road built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 40; EB over Lone Tree Road in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does I 40; EB over Lone Tree Road carry?

About 21,123 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is I 40; EB over Lone Tree Road?

The structure is 107 ft (32.6 m) long with a longest span of 40 ft (12.2 m) and a deck 41 ft wide.

Who owns I 40; EB over Lone Tree Road?

It is owned by the State Highway Agency.