US Bridges

I-40 WB over Oatman Road

Fair

Mohave County, Arizona · 4.6 MI W JCT US 93 · Structure no. 01759

Built
1978
47 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
8,543
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 WB over Oatman Road is a prestressed concrete box beam or girders - single or spread carrying I-40 WB over Oatman Road in Mohave County, Arizona. It was built in 1978, so it is 47 years old, younger 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 8,543 vehicles a day, roughly 49% of them trucks, projected to reach 8,553 by 2041. The structure is 134 ft (40.8 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI-40 WB
CrossesOatman Road
Location4.6 MI W JCT US 93
RouteInterstate 40
CountyMohave County
StateArizona
Coordinates35.136, -114.1026
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span132 ft (40.2 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,543 (2021)
Projected traffic8,553 by 2041
Trucks49%
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 Oatman Road built?

It was built in 1978, making it 47 years old in 2025.

What condition is I-40 WB over Oatman 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 December 2024.

How much traffic does I-40 WB over Oatman Road carry?

About 8,543 vehicles per day (2021 count), of which roughly 49% are trucks.

How long is I-40 WB over Oatman Road?

The structure is 134 ft (40.8 m) long with a longest span of 132 ft (40.2 m) and a deck 45 ft wide.

Who owns I-40 WB over Oatman Road?

It is owned by the State Highway Agency.