US Bridges

I-10 WB over New Water Mtn Wash

Fair

La Paz County, Arizona · 8.2 MI E JCT US 60 · Structure no. 01206

Built
1967
58 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
111 ft
4 main spans
Daily traffic
13,658
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 WB over New Water Mtn Wash is a concrete continuous slab carrying I-10 WB over New Water Mtn Wash in La Paz County, Arizona. It was built in 1967, so it is 58 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 13,658 vehicles a day, roughly 47% of them trucks, projected to reach 13,668 by 2042. The structure is 111 ft (33.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 WB
CrossesNew Water Mtn Wash
Location8.2 MI E JCT US 60
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.64503, -113.86982
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span30 ft (9.1 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,658 (2022)
Projected traffic13,668 by 2042
Trucks47%
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 WB over New Water Mtn Wash built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-10 WB over New Water Mtn 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 January 2024.

How much traffic does I-10 WB over New Water Mtn Wash carry?

About 13,658 vehicles per day (2022 count), of which roughly 47% are trucks.

How long is I-10 WB over New Water Mtn Wash?

The structure is 111 ft (33.8 m) long with a longest span of 30 ft (9.1 m) and a deck 41 ft wide.

Who owns I-10 WB over New Water Mtn Wash?

It is owned by the State Highway Agency.