US Bridges

IRR SR 387 over Santa Cruz Wash

Fair

Pinal County, Arizona · 2.7 MI N JCT SR 84 · Structure no. 00646

Built
1961
64 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
141 ft
5 main spans
Daily traffic
25,126
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 387 over Santa Cruz Wash is a concrete continuous slab carrying IRR SR 387 over Santa Cruz Wash in Pinal County, Arizona. It was built in 1961, so it is 64 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 25,126 vehicles a day, roughly 9% of them trucks, projected to reach 25,136 by 2042. The structure is 141 ft (43 m) long and 64 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIRR SR 387
CrossesSanta Cruz Wash
Location2.7 MI N JCT SR 84
RouteState Highway 387
CountyPinal County
StateArizona
Coordinates32.9163, -111.7571
Functional classUrban Other Principal 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 inspectionNovember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length141 ft (43 m)
Longest span30 ft (9.1 m)
Deck width64 ft (19.5 m)
Roadway width61 ft (18.5 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic25,126 (2022)
Projected traffic25,136 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 387 over Santa Cruz Wash built?

It was built in 1961, making it 64 years old in 2025.

What condition is IRR SR 387 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 November 2024.

How much traffic does IRR SR 387 over Santa Cruz Wash carry?

About 25,126 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is IRR SR 387 over Santa Cruz Wash?

The structure is 141 ft (43 m) long with a longest span of 30 ft (9.1 m) and a deck 64 ft wide.

Who owns IRR SR 387 over Santa Cruz Wash?

It is owned by the State Highway Agency.