US Bridges

I-40 EB over Clack Cyn Wash & Road

Fair

Mohave County, Arizona · 3.9 MI W JCT SR 66 · Structure no. 01837

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
323 ft
2 main spans
Daily traffic
20,991
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 EB over Clack Cyn Wash & Road is a prestressed concrete continuous box beam or girders - single or spread carrying I-40 EB over Clack Cyn Wash & Road in Mohave County, Arizona. It was built in 1980, so it is 45 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 20,991 vehicles a day, roughly 28% of them trucks, projected to reach 21,001 by 2041. The structure is 323 ft (98.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-40 EB
CrossesClack Cyn Wash & Road
Location3.9 MI W JCT SR 66
RouteInterstate 40
CountyMohave County
StateArizona
Coordinates35.2028, -114.0638
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length323 ft (98.5 m)
Longest span160 ft (48.8 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,991 (2021)
Projected traffic21,001 by 2041
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 EB over Clack Cyn Wash & Road built?

It was built in 1980, making it 45 years old in 2025.

What condition is I-40 EB over Clack Cyn Wash & 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 EB over Clack Cyn Wash & Road carry?

About 20,991 vehicles per day (2021 count), of which roughly 28% are trucks.

How long is I-40 EB over Clack Cyn Wash & Road?

The structure is 323 ft (98.5 m) long with a longest span of 160 ft (48.8 m) and a deck 45 ft wide.

Who owns I-40 EB over Clack Cyn Wash & Road?

It is owned by the State Highway Agency.