US Bridges

IRR BIA RTE 8 over Wash

Fair

Graham County, Arizona · 15.3 KM NE of JCT 70 · Structure no. 00000000000H202

Built
1965
60 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
170
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 8 over Wash is a concrete culvert carrying IRR BIA RTE 8 over Wash in Graham County, Arizona. It was built in 1965, so it is 60 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 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 170 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2044. The structure is 21 ft (6.4 m) long and 47 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesIRR BIA RTE 8
CrossesWash
Location15.3 KM NE of JCT 70
RouteFederal Lands Road 8
CountyGraham County
StateArizona
Coordinates33.38692, -110.27742
Functional classRural Minor Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3.1 m)
Deck width47 ft (14.2 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2024)
Projected traffic200 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 8 over Wash built?

It was built in 1965, making it 60 years old in 2025.

What condition is IRR BIA RTE 8 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 January 2024.

How much traffic does IRR BIA RTE 8 over Wash carry?

About 170 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 8 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.1 m) and a deck 47 ft wide.

Who owns IRR BIA RTE 8 over Wash?

It is owned by the Bureau of Indian Affairs.