US Bridges

IRR SR 87 over Mcclellan Wash

Fair

Pinal County, Arizona · 4.7 MI W JCT SR 287 · Structure no. 00610

Built
1960
65 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
119 ft
5 main spans
Daily traffic
10,511
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 87 over Mcclellan Wash is a concrete continuous slab carrying IRR SR 87 over Mcclellan Wash in Pinal County, Arizona. It was built in 1960, so it is 65 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 10,511 vehicles a day, roughly 8% of them trucks, projected to reach 10,521 by 2042. The structure is 119 ft (36.3 m) long and 45 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesIRR SR 87
CrossesMcclellan Wash
Location4.7 MI W JCT SR 287
RouteState Highway 87
CountyPinal County
StateArizona
Coordinates33.0026, -111.5998
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans5
Design loadHS 20
Structure length119 ft (36.3 m)
Longest span25 ft (7.6 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,511 (2022)
Projected traffic10,521 by 2042
Trucks8%
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$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 87 over Mcclellan Wash built?

It was built in 1960, making it 65 years old in 2025.

What condition is IRR SR 87 over Mcclellan 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 January 2024.

How much traffic does IRR SR 87 over Mcclellan Wash carry?

About 10,511 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is IRR SR 87 over Mcclellan Wash?

The structure is 119 ft (36.3 m) long with a longest span of 25 ft (7.6 m) and a deck 45 ft wide.

Who owns IRR SR 87 over Mcclellan Wash?

It is owned by the State Highway Agency.