US Bridges

IRR US 160 over Wash

Good

Navajo County, Arizona · 1.0 MI W JCT SR 98 · Structure no. 06471

Built
1961
64 years old
Condition
Good
inspected September 2022
Type
Culvert
Steel
Length
34 ft
5 main spans
Daily traffic
3,495
2017 count
Owner
State
State Highway Agency

About this bridge

IRR US 160 over Wash is a steel culvert carrying IRR US 160 over Wash in Navajo County, Arizona. It was built in 1961, so it is 64 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 3,495 vehicles a day, roughly 7% of them trucks, projected to reach 3,505 by 2038. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR US 160
CrossesWash
Location1.0 MI W JCT SR 98
RouteU.S. Route 160
CountyNavajo County
StateArizona
Coordinates36.4545, -110.708
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans5
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,495 (2017)
Projected traffic3,505 by 2038
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 160 over Wash built?

It was built in 1961, making it 64 years old in 2025.

What condition is IRR US 160 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 September 2022.

How much traffic does IRR US 160 over Wash carry?

About 3,495 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is IRR US 160 over Wash?

The structure is 34 ft (10.4 m) long with a longest span of 5 ft (1.5 m).

Who owns IRR US 160 over Wash?

It is owned by the State Highway Agency.