US Bridges

IRR SR 260 over Little Colorado River

Fair

Apache County, Arizona · 8.0 MI W JCT US 180 · Structure no. 00416

Built
1954
71 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
95 ft
3 main spans
Daily traffic
1,794
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 260 over Little Colorado River is a concrete continuous slab carrying IRR SR 260 over Little Colorado River in Apache County, Arizona. It was built in 1954, so it is 71 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 1,794 vehicles a day, roughly 9% of them trucks, projected to reach 1,804 by 2042. The structure is 95 ft (29 m) long and 32 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesIRR SR 260
CrossesLittle Colorado River
Location8.0 MI W JCT US 180
RouteState Highway 260
CountyApache County
StateArizona
Coordinates34.1109, -109.3155
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length95 ft (29 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,794 (2022)
Projected traffic1,804 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 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 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 260 over Little Colorado River built?

It was built in 1954, making it 71 years old in 2025.

What condition is IRR SR 260 over Little Colorado River 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 October 2024.

How much traffic does IRR SR 260 over Little Colorado River carry?

About 1,794 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is IRR SR 260 over Little Colorado River?

The structure is 95 ft (29 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns IRR SR 260 over Little Colorado River?

It is owned by the State Highway Agency.