US Bridges

IRR BIA 101 over Ali Molina Wash

Fair

Pima County, Arizona · 0.3 KM South of Az HWY 86 · Structure no. 00000000000H632

Built
1965
60 years old, rebuilt 1995
Condition
Fair
inspected January 2023
Type
Culvert
Concrete Continuous
Length
72 ft
4 main spans
Daily traffic
1,100
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA 101 over Ali Molina Wash is a concrete continuous culvert carrying IRR BIA 101 over Ali Molina Wash in Pima County, Arizona. It was built in 1965 and reconstructed in 1995, 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 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 1,100 vehicles a day, roughly 10% of them trucks, projected to reach 1,285 by 2043. The structure is 72 ft (21.9 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIRR BIA 101
CrossesAli Molina Wash
Location0.3 KM South of Az HWY 86
RouteFederal Lands Road 101
CountyPima County
StateArizona
Coordinates31.91605, -111.87973
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span17 ft (5.1 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,285 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 101 over Ali Molina Wash built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1995.

What condition is IRR BIA 101 over Ali Molina 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 2023.

How much traffic does IRR BIA 101 over Ali Molina Wash carry?

About 1,100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IRR BIA 101 over Ali Molina Wash?

The structure is 72 ft (21.9 m) long with a longest span of 17 ft (5.1 m) and a deck 34 ft wide.

Who owns IRR BIA 101 over Ali Molina Wash?

It is owned by the Bureau of Indian Affairs.