US Bridges

IRR SR 85 over Wash

Fair

Pima County, Arizona · 11.9 MI S JCT SR 86 · Structure no. 04583

Built
1942
83 years old
Condition
Fair
inspected October 2021
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,400
2020 count
Owner
State
State Highway Agency

About this bridge

IRR SR 85 over Wash is a concrete continuous culvert carrying IRR SR 85 over Wash in Pima County, Arizona. It was built in 1942, so it is 83 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 1,400 vehicles a day, roughly 12% of them trucks, projected to reach 1,410 by 2040. The structure is 21 ft (6.4 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR SR 85
CrossesWash
Location11.9 MI S JCT SR 86
RouteState Highway 85
CountyPima County
StateArizona
Coordinates32.0998, -112.7714
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width34 ft (10.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2020)
Projected traffic1,410 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 IRR SR 85 over Wash built?

It was built in 1942, making it 83 years old in 2025.

What condition is IRR SR 85 over 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 October 2021.

How much traffic does IRR SR 85 over Wash carry?

About 1,400 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is IRR SR 85 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns IRR SR 85 over Wash?

It is owned by the State Highway Agency.