US Bridges

Ironwood ST over Drainage

Fair

Pima County, Arizona · E. of Craycroft Rd. · Structure no. 2360008P0000000

Built
2000
25 years old
Condition
Fair
inspected December 2024
Type
Frame
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
30
2021 count
Owner
Federal
Air Force

About this bridge

Ironwood ST over Drainage is a concrete continuous frame carrying Ironwood ST over Drainage in Pima County, Arizona. It was built in 2000, so it is 25 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 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 30 vehicles a day, projected to reach 35 by 2031. The structure is 23 ft (7.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIronwood ST
CrossesDrainage
LocationE. of Craycroft Rd.
RouteFederal Lands Road 0
CountyPima County
StateArizona
Coordinates32.18108, -110.87145
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length23 ft (7.1 m)
Longest span11 ft (3.4 m)
Deck width47 ft (14.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2021)
Projected traffic35 by 2031
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerAir Force
Maintained byAir Force
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$83,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ironwood ST over Drainage built?

It was built in 2000, making it 25 years old in 2025.

What condition is Ironwood ST over Drainage 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 December 2024.

How much traffic does Ironwood ST over Drainage carry?

About 30 vehicles per day (2021 count).

How long is Ironwood ST over Drainage?

The structure is 23 ft (7.1 m) long with a longest span of 11 ft (3.4 m) and a deck 47 ft wide.

Who owns Ironwood ST over Drainage?

It is owned by the Air Force.