US Bridges

IRR US 70 over Wash

Good

Gila County, Arizona · 100 E JCT SR 77 · Structure no. 04276

Built
1957
68 years old, rebuilt 1989
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
7,836
2022 count
Owner
State
State Highway Agency

About this bridge

IRR US 70 over Wash is a concrete continuous culvert carrying IRR US 70 over Wash in Gila County, Arizona. It was built in 1957 and reconstructed in 1989, so it is 68 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 7,836 vehicles a day, roughly 14% of them trucks, projected to reach 7,846 by 2042. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 62.8 mi (101 km).

Location

Open in Google Maps
CarriesIRR US 70
CrossesWash
Location100 E JCT SR 77
RouteU.S. Route 70
CountyGila County
StateArizona
Coordinates33.37336, -110.738
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 protection7 GoodSome minor problems.
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 rating71 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 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 traffic7,836 (2022)
Projected traffic7,846 by 2042
Trucks14%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.8 mi (101 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 70 over Wash built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1989.

What condition is IRR US 70 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 US 70 over Wash carry?

About 7,836 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is IRR US 70 over Wash?

The structure is 29 ft (8.8 m) long with a longest span of 10 ft (3 m).

Who owns IRR US 70 over Wash?

It is owned by the State Highway Agency.