US Bridges

BIA IRR 27 over Roadside Ditch

Good

Pinal County, Arizona · 1KM SE of JCT W/ N Murphy · Structure no. 0000H57612B0580

Built
2006
19 years old
Condition
Good
inspected January 2023
Type
Culvert
Steel
Length
36 ft
4 main spans
Daily traffic
100
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

BIA IRR 27 over Roadside Ditch is a steel culvert carrying BIA IRR 27 over Roadside Ditch in Pinal County, Arizona. It was built in 2006, so it is 19 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 36 ft (11 m) long and 65 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesBIA IRR 27
CrossesRoadside Ditch
Location1KM SE of JCT W/ N Murphy
RouteFederal Lands Road 27
StateArizona
Coordinates32.9871, -111.935
Functional classRural Local

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 protection8 Very GoodNo problems noted.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length36 ft (11 m)
Longest span7 ft (2.1 m)
Deck width65 ft (19.7 m)
Roadway width63 ft (19.3 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 27 over Roadside Ditch built?

It was built in 2006, making it 19 years old in 2025.

What condition is BIA IRR 27 over Roadside Ditch 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 27 over Roadside Ditch carry?

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

How long is BIA IRR 27 over Roadside Ditch?

The structure is 36 ft (11 m) long with a longest span of 7 ft (2.1 m) and a deck 65 ft wide.

Who owns BIA IRR 27 over Roadside Ditch?

It is owned by the Bureau of Indian Affairs.