SR 84 over Santa Rosa Wash

Fair

Pinal County, Arizona · 11.7 MI E JCT I-8 · Structure no. 00419

Built: 1954; 71 years old
Condition: Fair; inspected February 2024
Type: Slab; Concrete Continuous
Length: 194 ft; 8 main spans
Daily traffic: 2,985; 2023 count
Owner: State; State Highway Agency

About this bridge

SR 84 over Santa Rosa Wash is a concrete continuous slab carrying SR 84 over Santa Rosa Wash in Pinal County, Arizona. It was built in 1954, so it is 71 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 2,985 vehicles a day, roughly 9% of them trucks, projected to reach 2,995 by 2042. The structure is 194 ft (59.1 m) long and 45 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps

CarriesSR 84

CrossesSanta Rosa Wash

Location11.7 MI E JCT I-8

RouteState Highway 84

CountyPinal County

StateArizona

Coordinates32.87938, -111.94668

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

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 geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment6: Equal to present minimum criteria

Operating rating41 US tons

Inventory rating24 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans8

Design loadHS 20

Structure length194 ft (59.1 m)

Longest span25 ft (7.6 m)

Deck width45 ft (13.7 m)

Roadway width42 ft (12.8 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,985 (2023)

Projected traffic2,995 by 2042

Trucks9%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed14.9 mi (24 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 84 over Santa Rosa Wash built?

It was built in 1954, making it 71 years old in 2025.

What condition is SR 84 over Santa Rosa 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 84 over Santa Rosa Wash carry?

About 2,985 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 84 over Santa Rosa Wash?

The structure is 194 ft (59.1 m) long with a longest span of 25 ft (7.6 m) and a deck 45 ft wide.

Who owns SR 84 over Santa Rosa Wash?

It is owned by the State Highway Agency.