US Bridges

I-10 EB over Tyson Wash

Fair

La Paz County, Arizona · 0.3 MI W JCT US 95 · Structure no. 00791

Built
1964
61 years old, rebuilt 1979
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
410 ft
14 main spans
Daily traffic
10,448
2020 count
Owner
State
State Highway Agency

About this bridge

I-10 EB over Tyson Wash is a concrete continuous slab carrying I-10 EB over Tyson Wash in La Paz County, Arizona. It was built in 1964 and reconstructed in 1979, so it is 61 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 10,448 vehicles a day, roughly 30% of them trucks, projected to reach 17,184 by 2040. The structure is 410 ft (125 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-10 EB
CrossesTyson Wash
Location0.3 MI W JCT US 95
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.66231, -114.22197
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to 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 rating64 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20
Structure length410 ft (125 m)
Longest span30 ft (9.1 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,448 (2020)
Projected traffic17,184 by 2040
Trucks30%
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-10 EB over Tyson Wash built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1979.

What condition is I-10 EB 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 February 2024.

How much traffic does I-10 EB over Tyson Wash carry?

About 10,448 vehicles per day (2020 count), of which roughly 30% are trucks.

How long is I-10 EB over Tyson Wash?

The structure is 410 ft (125 m) long with a longest span of 30 ft (9.1 m) and a deck 45 ft wide.

Who owns I-10 EB over Tyson Wash?

It is owned by the State Highway Agency.