US Bridges

IRR US 70 over Wash

Fair

Gila County, Arizona · 9.5 MI W of JCT SR 170 · Structure no. 04278

Built
1953
72 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
43 ft
4 main spans
Daily traffic
6,132
2021 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 1953, so it is 72 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,132 vehicles a day, roughly 16% of them trucks, projected to reach 6,142 by 2041. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR US 70
CrossesWash
Location9.5 MI W of JCT SR 170
RouteU.S. Route 70
CountyGila County
StateArizona
Coordinates33.345, -110.61667
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating79 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length43 ft (13.1 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 traffic6,132 (2021)
Projected traffic6,142 by 2041
Trucks16%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 70 over Wash built?

It was built in 1953, making it 72 years old in 2025.

What condition is IRR US 70 over Wash in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does IRR US 70 over Wash carry?

About 6,132 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is IRR US 70 over Wash?

The structure is 43 ft (13.1 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.