US Bridges

IRR BIA RTE 1 over Mesa Drain

FairPosted for load

La Paz County, Arizona · 1.2 KM N of BIA RTE 1/56 · Structure no. 00000000000H007

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
60 ft
3 main spans
Daily traffic
1,656
2021 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 1 over Mesa Drain is a concrete stringer/multi-beam or girder carrying IRR BIA RTE 1 over Mesa 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. Its operating status is: posted for load restriction.

It carries about 1,656 vehicles a day, roughly 15% of them trucks, projected to reach 2,000 by 2038. The structure is 60 ft (18.3 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesIRR BIA RTE 1
CrossesMesa Drain
Location1.2 KM N of BIA RTE 1/56
RouteFederal Lands Road 1
StateArizona
Coordinates33.77748, -114.46861
Functional classRural Major 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating32 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,656 (2021)
Projected traffic2,000 by 2038
Trucks15%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 1 over Mesa Drain built?

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

What condition is IRR BIA RTE 1 over Mesa 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 1 over Mesa Drain carry?

About 1,656 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is IRR BIA RTE 1 over Mesa Drain?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns IRR BIA RTE 1 over Mesa Drain?

It is owned by the Bureau of Indian Affairs.