US Bridges

IRR BIA RTE N39 over Sage Wash

Fair

Apache County, Arizona · 3.6 MI N Arizona HWY 264 · Structure no. 00000000000N642

Built
1959
66 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
30 ft
2 main spans
Daily traffic
550
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N39 over Sage Wash is a wood or timber stringer/multi-beam or girder carrying IRR BIA RTE N39 over Sage Wash in Apache County, Arizona. It was built in 1959, so it is 66 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, posting recommended but not legally implemented.

It carries about 550 vehicles a day, roughly 1% of them trucks, projected to reach 631 by 2040. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesIRR BIA RTE N39
CrossesSage Wash
Location3.6 MI N Arizona HWY 264
RouteFederal Lands Road 0N39
CountyApache County
StateArizona
Coordinates35.75303, -109.45011
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating11.8 US tons
Inventory rating8.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span13 ft (4 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2023)
Projected traffic631 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$361,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE N39 over Sage Wash built?

It was built in 1959, making it 66 years old in 2025.

What condition is IRR BIA RTE N39 over Sage 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 N39 over Sage Wash carry?

About 550 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is IRR BIA RTE N39 over Sage Wash?

The structure is 30 ft (9.1 m) long with a longest span of 13 ft (4 m) and a deck 16 ft wide.

Who owns IRR BIA RTE N39 over Sage Wash?

It is owned by the Bureau of Indian Affairs.