US Bridges

I 40; WB over Buffalo Range RD

Fair

Coconino County, Arizona · 20.5 MI West JCT SR 99 · Structure no. 01387

Built
1970
55 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
107 ft
3 main spans
Daily traffic
10,010
2024 count
Owner
State
State Highway Agency

About this bridge

I 40; WB over Buffalo Range RD is a concrete continuous slab carrying I 40; WB over Buffalo Range RD in Coconino County, Arizona. It was built in 1970, so it is 55 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 6 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 10,010 vehicles a day, roughly 47% of them trucks, projected to reach 10,020 by 2042. The structure is 107 ft (32.6 m) long and 40 ft wide.

CarriesI 40; WB
CrossesBuffalo Range RD
Location20.5 MI West JCT SR 99
RouteInterstate 40
StateArizona
Coordinates35.1293, -111.1839
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 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 width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,010 (2024)
Projected traffic10,020 by 2042
Trucks47%
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 Buffalo Range RD built?

It was built in 1970, making it 55 years old in 2025.

What condition is I 40; WB over Buffalo Range RD 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; WB over Buffalo Range RD carry?

About 10,010 vehicles per day (2024 count), of which roughly 47% are trucks.

How long is I 40; WB over Buffalo Range RD?

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

Who owns I 40; WB over Buffalo Range RD?

It is owned by the State Highway Agency.