US Bridges

SR 177 over Wash

Good

Pinal County, Arizona · 8.6 MI West JCT SR 77 · Structure no. 05053

Built
1958
67 years old
Condition
Good
inspected February 2022
Type
Culvert
Concrete Continuous
Length
54 ft
3 main spans
Daily traffic
2,319
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 Pinal County, Arizona. It was built in 1958, so it is 67 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,319 vehicles a day, roughly 11% of them trucks, projected to reach 2,329 by 2041. The structure is 54 ft (16.5 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
Location8.6 MI West JCT SR 77
RouteState Highway 177
CountyPinal County
StateArizona
Coordinates33.0489, -110.8901
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span12 ft (3.7 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,319 (2021)
Projected traffic2,329 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 1958, making it 67 years old in 2025.

What condition is SR 177 over Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2022.

How much traffic does SR 177 over Wash carry?

About 2,319 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SR 177 over Wash?

The structure is 54 ft (16.5 m) long with a longest span of 12 ft (3.7 m) and a deck 35 ft wide.

Who owns SR 177 over Wash?

It is owned by the State Highway Agency.