US Bridges

SR 177 over Wash

Fair

Pinal County, Arizona · 13.6 MI S JCT US 60 · Structure no. 05059

Built
1960
65 years old
Condition
Fair
inspected February 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,918
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 1960, so it is 65 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 1,918 vehicles a day, roughly 11% of them trucks, projected to reach 1,928 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesSR 177
CrossesWash
Location13.6 MI S JCT US 60
RouteState Highway 177
CountyPinal County
StateArizona
Coordinates33.1423, -110.9911
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.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,918 (2021)
Projected traffic1,928 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 1960, making it 65 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 1,918 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SR 177 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns SR 177 over Wash?

It is owned by the State Highway Agency.