US Bridges

IRR BIA RTE 3 over Road House Canyon

FairPosted for load

Graham County, Arizona · 20.6 KM E of Coolidge Dam · Structure no. 00000000000H179

Built
1929
96 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
80 ft
4 main spans
Daily traffic
120
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 3 over Road House Canyon is a concrete slab carrying IRR BIA RTE 3 over Road House Canyon in Graham County, Arizona. It was built in 1929, so it is 96 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: posted for other load-capacity restriction.

It carries about 120 vehicles a day, roughly 2% of them trucks, projected to reach 410 by 2044. The structure is 80 ft (24.4 m) long and 23 ft wide. If it were closed, the detour would be 67.1 mi (108 km).

Location

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CarriesIRR BIA RTE 3
CrossesRoad House Canyon
Location20.6 KM E of Coolidge Dam
RouteFederal Lands Road 3
CountyGraham County
StateArizona
Coordinates33.18272, -110.35603
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length80 ft (24.4 m)
Longest span20 ft (6.1 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2024)
Projected traffic410 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed67.1 mi (108 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 3 over Road House Canyon built?

It was built in 1929, making it 96 years old in 2025.

What condition is IRR BIA RTE 3 over Road House Canyon 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 December 2024.

How much traffic does IRR BIA RTE 3 over Road House Canyon carry?

About 120 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is IRR BIA RTE 3 over Road House Canyon?

The structure is 80 ft (24.4 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns IRR BIA RTE 3 over Road House Canyon?

It is owned by the Bureau of Indian Affairs.