US Bridges

SR 79 over Brady Wash

Fair

Pinal County, Arizona · 20.3 MI North JCT SR 77 · Structure no. 00253

Built
1939
86 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
176 ft
7 main spans
Daily traffic
34
2023 count
Owner
State
State Highway Agency

About this bridge

SR 79 over Brady Wash is a concrete continuous slab carrying SR 79 over Brady Wash in Pinal County, Arizona. It was built in 1939, so it is 86 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 5 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 34 vehicles a day, roughly 10% of them trucks, projected to reach 54 by 2042. The structure is 176 ft (53.6 m) long and 31 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesSR 79
CrossesBrady Wash
Location20.3 MI North JCT SR 77
RouteState Highway 79
CountyPinal County
StateArizona
Coordinates32.7733, -111.1608
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length176 ft (53.6 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2023)
Projected traffic54 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 79 over Brady Wash built?

It was built in 1939, making it 86 years old in 2025.

What condition is SR 79 over Brady 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 2024.

How much traffic does SR 79 over Brady Wash carry?

About 34 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 79 over Brady Wash?

The structure is 176 ft (53.6 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns SR 79 over Brady Wash?

It is owned by the State Highway Agency.