US Bridges

IRR BIA RTE N16 over Wash

Fair

Coconino County, Arizona · 0.3M N of INTER.N16 AZ98 · Structure no. 00000000000N324

Built
1990
35 years old
Condition
Fair
inspected March 2023
Type
Culvert
Steel
Length
27 ft
3 main spans
Daily traffic
700
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N16 over Wash is a steel culvert carrying IRR BIA RTE N16 over Wash in Coconino County, Arizona. It was built in 1990, so it is 35 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 700 vehicles a day, roughly 10% of them trucks, projected to reach 819 by 2043. The structure is 27 ft (8.2 m) long and 79 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N16
CrossesWash
Location0.3M N of INTER.N16 AZ98
RouteFederal Lands Road 0N16
CountyCoconino County
StateArizona
Coordinates36.58361, -110.79306
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span7 ft (2.1 m)
Deck width79 ft (24.2 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic819 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 N16 over Wash built?

It was built in 1990, making it 35 years old in 2025.

What condition is IRR BIA RTE N16 over 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 N16 over Wash carry?

About 700 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE N16 over Wash?

The structure is 27 ft (8.2 m) long with a longest span of 7 ft (2.1 m) and a deck 79 ft wide.

Who owns IRR BIA RTE N16 over Wash?

It is owned by the Bureau of Indian Affairs.