US Bridges

IRR BIA RTE 34 over West Drain

Fair

La Paz County, Arizona · 7.9 KM East of BIA 1 · Structure no. 00000000000H023

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
60 ft
3 main spans
Daily traffic
30
2021 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 34 over West Drain is a concrete continuous slab carrying IRR BIA RTE 34 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 5 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 30 vehicles a day, roughly 15% of them trucks, projected to reach 35 by 2038. The structure is 60 ft (18.3 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIRR BIA RTE 34
CrossesWest Drain
Location7.9 KM East of BIA 1
RouteFederal Lands Road 34
StateArizona
Coordinates33.92642, -114.51731
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
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.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum 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 (18.3 m)
Longest span20 ft (6.1 m)
Deck width22 ft (6.6 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2021)
Projected traffic35 by 2038
Trucks15%
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 34 over West Drain built?

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

What condition is IRR BIA RTE 34 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 34 over West Drain carry?

About 30 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is IRR BIA RTE 34 over West Drain?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.

Who owns IRR BIA RTE 34 over West Drain?

It is owned by the Bureau of Indian Affairs.