US Bridges

I 10; EB & WB over Gonzales Wash

Fair

La Paz County, Arizona · 8.6 MI W JCT US 95 · Structure no. 05381

Built
1950
75 years old, rebuilt 1979
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
24,856
2022 count
Owner
State
State Highway Agency

About this bridge

I 10; EB & WB over Gonzales Wash is a concrete continuous culvert carrying I 10; EB & WB over Gonzales Wash in La Paz County, Arizona. It was built in 1950 and reconstructed in 1979, 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 24,856 vehicles a day, roughly 49% of them trucks, projected to reach 24,866 by 2042. The structure is 54 ft (16.5 m) long. If it were closed, the detour would be 75.2 mi (121 km).

Location

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CarriesI 10; EB & WB
CrossesGonzales Wash
Location8.6 MI W JCT US 95
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.6484, -114.3645
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,856 (2022)
Projected traffic24,866 by 2042
Trucks49%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$3,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 10; EB & WB over Gonzales Wash built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1979.

What condition is I 10; EB & WB over Gonzales 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; EB & WB over Gonzales Wash carry?

About 24,856 vehicles per day (2022 count), of which roughly 49% are trucks.

How long is I 10; EB & WB over Gonzales Wash?

The structure is 54 ft (16.5 m) long with a longest span of 12 ft (3.7 m).

Who owns I 10; EB & WB over Gonzales Wash?

It is owned by the State Highway Agency.