US Bridges

SR 85 over Wash

Good

Maricopa County, Arizona · 12.9 MI S of JCT I-10 · Structure no. 04458

Built
1956
69 years old, rebuilt 2009
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
54 ft
5 main spans
Daily traffic
14,390
2023 count
Owner
State
State Highway Agency

About this bridge

SR 85 over Wash is a concrete continuous culvert carrying SR 85 over Wash in Maricopa County, Arizona. It was built in 1956 and reconstructed in 2009, so it is 69 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 14,390 vehicles a day, roughly 27% of them trucks, projected to reach 14,400 by 2042. The structure is 54 ft (16.5 m) long. If it were closed, the detour would be 42.9 mi (69 km).

Location

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CarriesSR 85
CrossesWash
Location12.9 MI S of JCT I-10
RouteState Highway 85
CountyMaricopa County
StateArizona
Coordinates33.24322, -112.63897
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 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 rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,390 (2023)
Projected traffic14,400 by 2042
Trucks27%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 km)
TollOn a free road
National Highway SystemYes

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$2,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 85 over Wash built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2009.

What condition is 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 May 2023.

How much traffic does SR 85 over Wash carry?

About 14,390 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is SR 85 over Wash?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m).

Who owns SR 85 over Wash?

It is owned by the State Highway Agency.