US Bridges

IRR BIA RTE 8066 over Dry Run

Good

Navajo County, Arizona · 7.9KM East of Route N4 · Structure no. 0000N35780B0554

Built
2011
14 years old, rebuilt 9999
Condition
Good
inspected April 2023
Type
Culvert
Steel
Length
21 ft
1 main span
Daily traffic
230
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 8066 over Dry Run is a steel culvert carrying IRR BIA RTE 8066 over Dry Run in Navajo County, Arizona. It was built in 2011 and reconstructed in 9999, so it is 14 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 230 vehicles a day, roughly 10% of them trucks, projected to reach 300 by 2043. The structure is 21 ft (6.3 m) long and 101 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIRR BIA RTE 8066
CrossesDry Run
Location7.9KM East of Route N4
RouteFederal Lands Road 8066
StateArizona
Coordinates36.25092, -110.17428
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
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 rating87.1 US tons
Inventory rating67.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span21 ft (6.3 m)
Deck width101 ft (30.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2023)
Projected traffic300 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 8066 over Dry Run built?

It was built in 2011, making it 14 years old in 2025. It was reconstructed in 9999.

What condition is IRR BIA RTE 8066 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 8066 over Dry Run carry?

About 230 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 8066 over Dry Run?

The structure is 21 ft (6.3 m) long with a longest span of 21 ft (6.3 m) and a deck 101 ft wide.

Who owns IRR BIA RTE 8066 over Dry Run?

It is owned by the Bureau of Indian Affairs.