US Bridges

IRR BIA RTE N7 over Nazlini Wash

Fair

Apache County, Arizona · On Route 7 in Chinle · Structure no. 00000000000N546

Built
1996
29 years old, rebuilt 9999
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
3 main spans
Daily traffic
12,780
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N7 over Nazlini Wash is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE N7 over Nazlini Wash in Apache County, Arizona. It was built in 1996 and reconstructed in 9999, so it is 29 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 12,780 vehicles a day, roughly 15% of them trucks, projected to reach 35,100 by 2040. The structure is 260 ft (79.3 m) long and 62 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N7
CrossesNazlini Wash
LocationOn Route 7 in Chinle
RouteFederal Lands Road 0N7
CountyApache County
StateArizona
Coordinates36.15947, -109.57553
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length260 ft (79.3 m)
Longest span86 ft (26.2 m)
Deck width62 ft (18.9 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,780 (2023)
Projected traffic35,100 by 2040
Trucks15%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 N7 over Nazlini Wash built?

It was built in 1996, making it 29 years old in 2025. It was reconstructed in 9999.

What condition is IRR BIA RTE N7 over Nazlini 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 April 2023.

How much traffic does IRR BIA RTE N7 over Nazlini Wash carry?

About 12,780 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is IRR BIA RTE N7 over Nazlini Wash?

The structure is 260 ft (79.3 m) long with a longest span of 86 ft (26.2 m) and a deck 62 ft wide.

Who owns IRR BIA RTE N7 over Nazlini Wash?

It is owned by the Bureau of Indian Affairs.