US Bridges

IRR BIA RTE 19 over Supi Oidak Wash

Fair

Pima County, Arizona · 27.7 KM S of Az HWY 86 · Structure no. 00000000000H624

Built
1989
36 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
950
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 19 over Supi Oidak Wash is a concrete continuous slab carrying IRR BIA RTE 19 over Supi Oidak Wash in Pima County, Arizona. It was built in 1989, so it is 36 years old, younger 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 950 vehicles a day, roughly 4% of them trucks, projected to reach 1,054 by 2043. The structure is 81 ft (24.7 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIRR BIA RTE 19
CrossesSupi Oidak Wash
Location27.7 KM S of Az HWY 86
RouteFederal Lands Road 19
CountyPima County
StateArizona
Coordinates31.68608, -111.77197
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2023)
Projected traffic1,054 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 19 over Supi Oidak Wash built?

It was built in 1989, making it 36 years old in 2025.

What condition is IRR BIA RTE 19 over Supi Oidak 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 RTE 19 over Supi Oidak Wash carry?

About 950 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is IRR BIA RTE 19 over Supi Oidak Wash?

The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns IRR BIA RTE 19 over Supi Oidak Wash?

It is owned by the Bureau of Indian Affairs.