US Bridges

IRR BIA RTE N9054 over Steamboat Wash

PoorPosted for load

Apache County, Arizona · 1 MI SW of Steamboat Az · Structure no. 00000000000N645

Built
1959
66 years old, rebuilt 1971
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
111
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N9054 over Steamboat Wash is a steel stringer/multi-beam or girder carrying IRR BIA RTE N9054 over Steamboat Wash in Apache County, Arizona. It was built in 1959 and reconstructed in 1971, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 111 vehicles a day, roughly 1% of them trucks, projected to reach 130 by 2043. The structure is 30 ft (9 m) long and 14 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesIRR BIA RTE N9054
CrossesSteamboat Wash
Location1 MI SW of Steamboat Az
RouteFederal Lands Road N9054
CountyApache County
StateArizona
Coordinates35.74431, -109.86186
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating45.6 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length30 ft (9 m)
Longest span26 ft (8 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (2023)
Projected traffic130 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$550,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE N9054 over Steamboat Wash built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1971.

What condition is IRR BIA RTE N9054 over Steamboat Wash in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does IRR BIA RTE N9054 over Steamboat Wash carry?

About 111 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is IRR BIA RTE N9054 over Steamboat Wash?

The structure is 30 ft (9 m) long with a longest span of 26 ft (8 m) and a deck 14 ft wide.

Who owns IRR BIA RTE N9054 over Steamboat Wash?

It is owned by the Bureau of Indian Affairs.