US Bridges

SR 79 over Gila River

Good

Pinal County, Arizona · 1.2 MI North SR287 · Structure no. 20206

Built
2023
2 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
1,417 ft
14 main spans
Daily traffic
9,582
2025 count
Owner
State
State Highway Agency

About this bridge

SR 79 over Gila River is a concrete continuous stringer/multi-beam or girder carrying SR 79 over Gila River in Pinal County, Arizona. It was built in 2023, so it is 2 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,582 vehicles a day, roughly 9% of them trucks, projected to reach 9,592 by 2042. The structure is 1,417 ft (431.9 m) long and 50 ft wide. If it were closed, the detour would be 64 mi (103 km).

Location

Open in Google Maps
CarriesSR 79
CrossesGila River
Location1.2 MI North SR287
RouteState Highway 79
CountyPinal County
StateArizona
Coordinates33.0546, -111.3792
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHL 93
Structure length1,417 ft (431.9 m)
Longest span101 ft (30.8 m)
Deck width50 ft (15.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,582 (2025)
Projected traffic9,592 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed64 mi (103 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 79 over Gila River built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR 79 over Gila River 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 January 2025.

How much traffic does SR 79 over Gila River carry?

About 9,582 vehicles per day (2025 count), of which roughly 9% are trucks.

How long is SR 79 over Gila River?

The structure is 1,417 ft (431.9 m) long with a longest span of 101 ft (30.8 m) and a deck 50 ft wide.

Who owns SR 79 over Gila River?

It is owned by the State Highway Agency.