US Bridges

IRR SR 260 over Wash

Good

Navajo County, Arizona · 0.1 MI S JCT US 60 · Structure no. 05045

Built
1939
86 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
21,452
2021 count
Owner
State
State Highway Agency

About this bridge

IRR SR 260 over Wash is a concrete continuous culvert carrying IRR SR 260 over Wash in Navajo County, Arizona. It was built in 1939, so it is 86 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 21,452 vehicles a day, roughly 8% of them trucks, projected to reach 21,462 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesIRR SR 260
CrossesWash
Location0.1 MI S JCT US 60
RouteState Highway 260
CountyNavajo County
StateArizona
Coordinates34.25248, -110.02862
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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 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 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 length21 ft (6.4 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 traffic21,452 (2021)
Projected traffic21,462 by 2041
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 260 over Wash built?

It was built in 1939, making it 86 years old in 2025.

What condition is IRR SR 260 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 October 2022.

How much traffic does IRR SR 260 over Wash carry?

About 21,452 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is IRR SR 260 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns IRR SR 260 over Wash?

It is owned by the State Highway Agency.