US Bridges

SR 84; FAS 588 over Santa Cruz Wash

Fair

Pinal County, Arizona · 18.6 MI E JCT I-8 · Structure no. 00421

Built
1954
71 years old, rebuilt 1973
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
212 ft
8 main spans
Daily traffic
4,888
2023 count
Owner
State
State Highway Agency

About this bridge

SR 84; FAS 588 over Santa Cruz Wash is a concrete continuous slab carrying SR 84; FAS 588 over Santa Cruz Wash in Pinal County, Arizona. It was built in 1954 and reconstructed in 1973, 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 4,888 vehicles a day, roughly 9% of them trucks, projected to reach 4,898 by 2042. The structure is 212 ft (64.6 m) long and 45 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSR 84; FAS 588
CrossesSanta Cruz Wash
Location18.6 MI E JCT I-8
RouteState Highway 84
CountyPinal County
StateArizona
Coordinates32.87943, -111.8289
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural 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 alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span28 ft (8.5 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,888 (2023)
Projected traffic4,898 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 84; FAS 588 over Santa Cruz Wash built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1973.

What condition is SR 84; FAS 588 over Santa Cruz 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; FAS 588 over Santa Cruz Wash carry?

About 4,888 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 84; FAS 588 over Santa Cruz Wash?

The structure is 212 ft (64.6 m) long with a longest span of 28 ft (8.5 m) and a deck 45 ft wide.

Who owns SR 84; FAS 588 over Santa Cruz Wash?

It is owned by the State Highway Agency.