US Bridges

SR 79 over Wash

Fair

Pinal County, Arizona · 13.6 MI S JCT SR 287 · Structure no. 04759

Built
1940
85 years old
Condition
Fair
inspected March 2022
Type
Culvert
Concrete Continuous
Length
53 ft
5 main spans
Daily traffic
2,470
2016 count
Owner
State
State Highway Agency

About this bridge

SR 79 over Wash is a concrete continuous culvert carrying SR 79 over Wash in Pinal County, Arizona. It was built in 1940, so it is 85 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 2,470 vehicles a day, roughly 11% of them trucks, projected to reach 2,480 by 2036. The structure is 53 ft (16.2 m) long and 32 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

Location

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CarriesSR 79
CrossesWash
Location13.6 MI S JCT SR 287
RouteState Highway 79
CountyPinal County
StateArizona
Coordinates32.884, -111.2627
Functional classRural Minor Arterial

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 inspectionMarch 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 alignment7: Better than present minimum criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span10 ft (3 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,470 (2016)
Projected traffic2,480 by 2036
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed65.2 mi (105 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 79 over Wash built?

It was built in 1940, making it 85 years old in 2025.

What condition is SR 79 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 March 2022.

How much traffic does SR 79 over Wash carry?

About 2,470 vehicles per day (2016 count), of which roughly 11% are trucks.

How long is SR 79 over Wash?

The structure is 53 ft (16.2 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns SR 79 over Wash?

It is owned by the State Highway Agency.