US Bridges

SR 88 (idaho Rd) over Wash

Good

Pinal County, Arizona · 2.3 MI N of JCT US 60 · Structure no. 06988

Built
1993
32 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
7,135
2019 count
Owner
State
State Highway Agency

About this bridge

SR 88 (idaho Rd) over Wash is a concrete continuous culvert carrying SR 88 (idaho Rd) over Wash in Pinal County, Arizona. It was built in 1993, so it is 32 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,135 vehicles a day, roughly 3% of them trucks, projected to reach 17,419 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 88 (idaho Rd)
CrossesWash
Location2.3 MI N of JCT US 60
RouteState Highway 88
CountyPinal County
StateArizona
Coordinates33.4184, -111.5461
Functional classUrban Other Principal 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating86 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,135 (2019)
Projected traffic17,419 by 2040
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 88 (idaho Rd) over Wash built?

It was built in 1993, making it 32 years old in 2025.

What condition is SR 88 (idaho Rd) 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 August 2021.

How much traffic does SR 88 (idaho Rd) over Wash carry?

About 7,135 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is SR 88 (idaho Rd) over Wash?

The structure is 22 ft (6.7 m) long with a longest span of 8 ft (2.4 m).

Who owns SR 88 (idaho Rd) over Wash?

It is owned by the State Highway Agency.