US Bridges

IRR BIA RTE N251 over Dry Run

Good

Apache County, Arizona · 0.7KM North of Cottonwood · Structure no. 0000N35780B0538

Built
2019
6 years old, rebuilt 9999
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
48 ft
4 main spans
Daily traffic
500
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N251 over Dry Run is a concrete culvert carrying IRR BIA RTE N251 over Dry Run in Apache County, Arizona. It was built in 2019 and reconstructed in 9999, so it is 6 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 5% of them trucks, projected to reach 550 by 2043. The structure is 48 ft (14.6 m) long and 64 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIRR BIA RTE N251
CrossesDry Run
Location0.7KM North of Cottonwood
RouteFederal Lands Road 0N251
StateArizona
Coordinates36.08003, -109.87508
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span10 ft (3 m)
Deck width64 ft (19.5 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic550 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 N251 over Dry Run built?

It was built in 2019, making it 6 years old in 2025. It was reconstructed in 9999.

What condition is IRR BIA RTE N251 over Dry Run 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 April 2023.

How much traffic does IRR BIA RTE N251 over Dry Run carry?

About 500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE N251 over Dry Run?

The structure is 48 ft (14.6 m) long with a longest span of 10 ft (3 m) and a deck 64 ft wide.

Who owns IRR BIA RTE N251 over Dry Run?

It is owned by the Bureau of Indian Affairs.