US Bridges

SR77 over Aravaipa Creek

Good

Pinal County, Arizona · 11.3 MI S JCT SR 177 · Structure no. 20031

Built
2014
11 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
392 ft
9 main spans
Daily traffic
2,310
2023 count
Owner
State
State Highway Agency

About this bridge

SR77 over Aravaipa Creek is a concrete continuous slab carrying SR77 over Aravaipa Creek in Pinal County, Arizona. It was built in 2014, so it is 11 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 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 2,310 vehicles a day, roughly 19% of them trucks, projected to reach 2,321 by 2042. The structure is 392 ft (119.5 m) long and 49 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesSR77
CrossesAravaipa Creek
Location11.3 MI S JCT SR 177
RouteState Highway 77
StateArizona
Coordinates32.8385, -110.7101
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating67 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHL 93
Structure length392 ft (119.5 m)
Longest span45 ft (13.7 m)
Deck width49 ft (14.9 m)
Roadway width46 ft (14 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic2,310 (2023)
Projected traffic2,321 by 2042
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 SR77 over Aravaipa Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is SR77 over Aravaipa Creek 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 August 2023.

How much traffic does SR77 over Aravaipa Creek carry?

About 2,310 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is SR77 over Aravaipa Creek?

The structure is 392 ft (119.5 m) long with a longest span of 45 ft (13.7 m) and a deck 49 ft wide.

Who owns SR77 over Aravaipa Creek?

It is owned by the State Highway Agency.