US Bridges

IRR SR 85 over Wash

Good

Maricopa County, Arizona · 2.8 MI S JCT B 8 · Structure no. 04554

Built
1962
63 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
2,546
2021 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 Maricopa County, Arizona. It was built in 1962, so it is 63 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,546 vehicles a day, roughly 17% of them trucks, projected to reach 2,556 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesIRR SR 85
CrossesWash
Location2.8 MI S JCT B 8
RouteState Highway 85
CountyMaricopa County
StateArizona
Coordinates32.9075, -112.73925
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating83 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,546 (2021)
Projected traffic2,556 by 2041
Trucks17%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 85 over Wash built?

It was built in 1962, making it 63 years old in 2025.

What condition is IRR SR 85 over Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does IRR SR 85 over Wash carry?

About 2,546 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is IRR SR 85 over Wash?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns IRR SR 85 over Wash?

It is owned by the State Highway Agency.