US Bridges

IRR BIA RTE N112 over Tsenani Ahee Wash

Fair

Apache County, Arizona · 3.8MI South Fort Defiance · Structure no. 00000000000N673

Built
1991
34 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
56 ft
6 main spans
Daily traffic
2,534
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N112 over Tsenani Ahee Wash is a concrete continuous culvert carrying IRR BIA RTE N112 over Tsenani Ahee Wash in Apache County, Arizona. It was built in 1991, so it is 34 years old, younger 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 2,534 vehicles a day, roughly 10% of them trucks, projected to reach 2,965 by 2040. The structure is 56 ft (17.2 m) long and 58 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesIRR BIA RTE N112
CrossesTsenani Ahee Wash
Location3.8MI South Fort Defiance
RouteFederal Lands Road 0N112
CountyApache County
StateArizona
Coordinates35.70661, -109.09436
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length56 ft (17.2 m)
Longest span9 ft (2.7 m)
Deck width58 ft (17.6 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,534 (2023)
Projected traffic2,965 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE N112 over Tsenani Ahee Wash built?

It was built in 1991, making it 34 years old in 2025.

What condition is IRR BIA RTE N112 over Tsenani Ahee 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 March 2023.

How much traffic does IRR BIA RTE N112 over Tsenani Ahee Wash carry?

About 2,534 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE N112 over Tsenani Ahee Wash?

The structure is 56 ft (17.2 m) long with a longest span of 9 ft (2.7 m) and a deck 58 ft wide.

Who owns IRR BIA RTE N112 over Tsenani Ahee Wash?

It is owned by the Bureau of Indian Affairs.