US Bridges

I-8 over Mohawk Canal

Fair

Yuma County, Arizona · 34.2 MI E JCT US 95 · Structure no. 02738

Built
2003
22 years old
Condition
Fair
inspected February 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
252 ft
1 main span
Daily traffic
7,558
2023 count
Owner
State
State Highway Agency

About this bridge

I-8 over Mohawk Canal is a prestressed concrete box beam or girders - single or spread carrying I-8 over Mohawk Canal in Yuma County, Arizona. It was built in 2003, so it is 22 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 7,558 vehicles a day, roughly 26% of them trucks, projected to reach 7,568 by 2042. The structure is 252 ft (76.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-8
CrossesMohawk Canal
Location34.2 MI E JCT US 95
RouteInterstate 8
CountyYuma County
StateArizona
Coordinates32.6763, -114.0487
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 rating99 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span151 ft (46 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,558 (2023)
Projected traffic7,568 by 2042
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-8 over Mohawk Canal built?

It was built in 2003, making it 22 years old in 2025.

What condition is I-8 over Mohawk Canal 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 February 2025.

How much traffic does I-8 over Mohawk Canal carry?

About 7,558 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I-8 over Mohawk Canal?

The structure is 252 ft (76.8 m) long with a longest span of 151 ft (46 m) and a deck 45 ft wide.

Who owns I-8 over Mohawk Canal?

It is owned by the State Highway Agency.