US Bridges

IRR BIA RTE N15 over Whe Yol Da Sah Wash

Fair

Navajo County, Arizona · East of Bird Springs · Structure no. 00000000000N662

Built
1985
40 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
243 ft
4 main spans
Daily traffic
1,075
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N15 over Whe Yol Da Sah Wash is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE N15 over Whe Yol Da Sah Wash in Navajo County, Arizona. It was built in 1985, so it is 40 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 1,075 vehicles a day, roughly 10% of them trucks, projected to reach 1,742 by 2043. The structure is 243 ft (74 m) long and 33 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N15
CrossesWhe Yol Da Sah Wash
LocationEast of Bird Springs
RouteFederal Lands Road 0N15
CountyNavajo County
StateArizona
Coordinates35.33575, -110.55719
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length243 ft (74 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,075 (2023)
Projected traffic1,742 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 N15 over Whe Yol Da Sah Wash built?

It was built in 1985, making it 40 years old in 2025.

What condition is IRR BIA RTE N15 over Whe Yol Da Sah 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 N15 over Whe Yol Da Sah Wash carry?

About 1,075 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA RTE N15 over Whe Yol Da Sah Wash?

The structure is 243 ft (74 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns IRR BIA RTE N15 over Whe Yol Da Sah Wash?

It is owned by the Bureau of Indian Affairs.