US Bridges

IRR BIA RTE 27 over West Drain

Fair

La Paz County, Arizona · Midwy Betwn BIA Rts 27/30 · Structure no. 00000000000H022

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
89
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 27 over West Drain is a concrete continuous slab carrying IRR BIA RTE 27 over West Drain in La Paz County, Arizona. It was built in 1953, so it is 72 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 89 vehicles a day, roughly 40% of them trucks, projected to reach 115 by 2044. The structure is 60 ft (18.2 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIRR BIA RTE 27
CrossesWest Drain
LocationMidwy Betwn BIA Rts 27/30
RouteFederal Lands Road 27
StateArizona
Coordinates33.95034, -114.50352
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating49.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length60 ft (18.2 m)
Longest span20 ft (6.2 m)
Deck width22 ft (6.6 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89 (2024)
Projected traffic115 by 2044
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 27 over West Drain built?

It was built in 1953, making it 72 years old in 2025.

What condition is IRR BIA RTE 27 over West Drain 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 February 2024.

How much traffic does IRR BIA RTE 27 over West Drain carry?

About 89 vehicles per day (2024 count), of which roughly 40% are trucks.

How long is IRR BIA RTE 27 over West Drain?

The structure is 60 ft (18.2 m) long with a longest span of 20 ft (6.2 m) and a deck 22 ft wide.

Who owns IRR BIA RTE 27 over West Drain?

It is owned by the Bureau of Indian Affairs.