US Bridges

Old US 80 over Wellton-Mohawk

Fair

Yuma County, Arizona · 1.9 MI E JCT I-8 · Structure no. 08409

Built
1950
75 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
2,302
2022 count
Owner
County
County Highway Agency

About this bridge

Old US 80 over Wellton-Mohawk is a concrete continuous tee beam carrying Old US 80 over Wellton-Mohawk in Yuma County, Arizona. It was built in 1950, so it is 75 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 2,302 vehicles a day, roughly 5% of them trucks, projected to reach 2,312 by 2042. The structure is 142 ft (43.3 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOld US 80
CrossesWellton-Mohawk
Location1.9 MI E JCT I-8
RouteCounty Highway 0
CountyYuma County
StateArizona
Coordinates32.67229, -114.27281
Functional classRural Major Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span65 ft (19.8 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,302 (2022)
Projected traffic2,312 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Old US 80 over Wellton-Mohawk built?

It was built in 1950, making it 75 years old in 2025.

What condition is Old US 80 over Wellton-Mohawk 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 January 2025.

How much traffic does Old US 80 over Wellton-Mohawk carry?

About 2,302 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Old US 80 over Wellton-Mohawk?

The structure is 142 ft (43.3 m) long with a longest span of 65 ft (19.8 m) and a deck 45 ft wide.

Who owns Old US 80 over Wellton-Mohawk?

It is owned by the County Highway Agency.