US Bridges

I-40 EB over Stockton Hill Road

Fair

Mohave County, Arizona · 1.85 MI W JCT 66 · Structure no. 01841

Built
1980
45 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
142 ft
1 main span
Daily traffic
16,095
2021 count
Owner
State
State Highway Agency

About this bridge

I-40 EB over Stockton Hill Road is a prestressed concrete box beam or girders - single or spread carrying I-40 EB over Stockton Hill 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 16,095 vehicles a day, roughly 23% of them trucks, projected to reach 16,105 by 2041. The structure is 142 ft (43.3 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI-40 EB
CrossesStockton Hill Road
Location1.85 MI W JCT 66
RouteInterstate 40
CountyMohave County
StateArizona
Coordinates35.2171, -114.0355
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.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating46 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span139 ft (42.4 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,095 (2021)
Projected traffic16,105 by 2041
Trucks23%
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 EB over Stockton Hill Road built?

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

What condition is I-40 EB over Stockton Hill 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 Stockton Hill Road carry?

About 16,095 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is I-40 EB over Stockton Hill Road?

The structure is 142 ft (43.3 m) long with a longest span of 139 ft (42.4 m) and a deck 45 ft wide.

Who owns I-40 EB over Stockton Hill Road?

It is owned by the State Highway Agency.