US Bridges

Perimeter Road over Drainage

Fair

Pima County, Arizona · Irvington/Camino Seco · Structure no. 2360021P0000000

Built
2010
15 years old
Condition
Fair
inspected December 2024
Type
Frame
Concrete
Length
23 ft
2 main spans
Daily traffic
30
2021 count
Owner
Federal
Air Force

About this bridge

Perimeter Road over Drainage is a concrete frame carrying Perimeter Road over Drainage in Pima County, Arizona. It was built in 2010, so it is 15 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 30 vehicles a day, projected to reach 35 by 2031. The structure is 23 ft (7 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPerimeter Road
CrossesDrainage
LocationIrvington/Camino Seco
RouteFederal Lands Road 0
CountyPima County
StateArizona
Coordinates32.16218, -110.80853
Functional classRural Minor Arterial

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.
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 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 rating93 US tons
Inventory rating56 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width16 ft (4.9 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2021)
Projected traffic35 by 2031
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$98,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Perimeter Road over Drainage built?

It was built in 2010, making it 15 years old in 2025.

What condition is Perimeter Road 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 Perimeter Road over Drainage carry?

About 30 vehicles per day (2021 count).

How long is Perimeter Road over Drainage?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 16 ft wide.

Who owns Perimeter Road over Drainage?

It is owned by the Air Force.