US Bridges

W Main ST over Tyson Wash

Fair

La Paz County, Arizona · 0.4 MI W JCT US 95 · Structure no. 10940

Built
1981
44 years old, rebuilt 2007
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
186 ft
6 main spans
Daily traffic
3,605
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

W Main ST over Tyson Wash is a prestressed concrete box beam or girders - multiple carrying W Main ST over Tyson Wash in La Paz County, Arizona. It was built in 1981 and reconstructed in 2007, so it is 44 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 3,605 vehicles a day, roughly 38% of them trucks, projected to reach 3,615 by 2041. The structure is 186 ft (56.7 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW Main ST
CrossesTyson Wash
Location0.4 MI W JCT US 95
RouteCity Street 0
CountyLa Paz County
StateArizona
Coordinates33.66567, -114.22453
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span31 ft (9.4 m)
Deck width84 ft (25.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic3,605 (2021)
Projected traffic3,615 by 2041
Trucks38%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 W Main ST over Tyson Wash built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2007.

What condition is W Main ST over Tyson Wash 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 March 2023.

How much traffic does W Main ST over Tyson Wash carry?

About 3,605 vehicles per day (2021 count), of which roughly 38% are trucks.

How long is W Main ST over Tyson Wash?

The structure is 186 ft (56.7 m) long with a longest span of 31 ft (9.4 m) and a deck 84 ft wide.

Who owns W Main ST over Tyson Wash?

It is owned by the Town or Township Highway Agency.