SR 177 over Wash

Fair

Gila County, Arizona · 1.7 MI West JCT SR 77 · Structure no. 05046

Built: 1955; 70 years old
Condition: Fair; inspected February 2022
Type: Culvert; Concrete Continuous
Length: 24 ft; 2 main spans
Daily traffic: 2,407; 2021 count
Owner: State; State Highway Agency

About this bridge

SR 177 over Wash is a concrete continuous culvert carrying SR 177 over Wash in Gila County, Arizona. It was built in 1955, so it is 70 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 2,407 vehicles a day, roughly 11% of them trucks, projected to reach 2,417 by 2041. The structure is 24 ft (7.3 m) long and 35 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesSR 177

CrossesWash

Location1.7 MI West JCT SR 77

RouteState Highway 177

CountyGila County

StateArizona

Coordinates33.003, -110.7917

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.

Component	Rating	Meaning
Channel and channel protection	7 Good	Some minor problems.
Culvert	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionFebruary 2022

Inspection intervalevery 48 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation6: Equal to present minimum criteria

Deck geometry4: Meets minimum tolerable limits to be left in place as is

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating61 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadHS 20

Structure length24 ft (7.3 m)

Longest span10 ft (3 m)

Deck width35 ft (10.7 m)

Roadway width33 ft (10.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,407 (2021)

Projected traffic2,417 by 2041

Trucks11%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed28 mi (45 km)

TollOn a free road

National Highway SystemNo

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 SR 177 over Wash built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 177 over 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 2022.

How much traffic does SR 177 over Wash carry?

About 2,407 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SR 177 over Wash?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 35 ft wide.

Who owns SR 177 over Wash?

It is owned by the State Highway Agency.