US Bridges

BIA IRR 21 over Draw

Good

Pima County, Arizona · 10.7KM S of JCT W/Irr 28 · Structure no. 0000H54610B0668

Built
2001
24 years old
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
100
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

BIA IRR 21 over Draw is a concrete culvert carrying BIA IRR 21 over Draw in Pima County, Arizona. It was built in 2001, so it is 24 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 5% of them trucks, projected to reach 110 by 2043. The structure is 21 ft (6.3 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBIA IRR 21
CrossesDraw
Location10.7KM S of JCT W/Irr 28
RouteFederal Lands Road 21
StateArizona
Coordinates31.94968, -112.34287
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic110 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 BIA IRR 21 over Draw built?

It was built in 2001, making it 24 years old in 2025.

What condition is BIA IRR 21 over Draw in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does BIA IRR 21 over Draw carry?

About 100 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is BIA IRR 21 over Draw?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 44 ft wide.

Who owns BIA IRR 21 over Draw?

It is owned by the Bureau of Indian Affairs.