US Bridges

SR 85 over Drainage Wash

Good

Maricopa County, Arizona · 15.8 MI S of JCT I-10 · Structure no. 07136

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 85 over Drainage Wash is a concrete continuous culvert carrying SR 85 over Drainage Wash in Maricopa County, Arizona. It was built in 2008, so it is 17 years old, younger 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 1,000 vehicles a day, roughly 52% of them trucks, projected to reach 1,010 by 2042. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 85
CrossesDrainage Wash
Location15.8 MI S of JCT I-10
RouteState Highway 85
CountyMaricopa County
StateArizona
Coordinates33.20039, -112.64975
Functional classRural Local

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 protection7 GoodSome minor problems.
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 rating83 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 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 traffic1,000 (2023)
Projected traffic1,010 by 2042
Trucks52%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SR 85 over Drainage Wash built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR 85 over Drainage 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 Drainage Wash carry?

About 1,000 vehicles per day (2023 count), of which roughly 52% are trucks.

How long is SR 85 over Drainage Wash?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns SR 85 over Drainage Wash?

It is owned by the State Highway Agency.