US Bridges

S 12th Ave over Rodeo Wash

Fair

Pima County, Arizona · 0.02 MI S of Columbia ST · Structure no. 09029

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
3 main spans
Daily traffic
16,810
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 12th Ave over Rodeo Wash is a prestressed concrete box beam or girders - multiple carrying S 12th Ave over Rodeo Wash in Pima County, Arizona. It was built in 1960, so it is 65 years old, older 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 16,810 vehicles a day, roughly 10% of them trucks, projected to reach 16,820 by 2042. The structure is 62 ft (18.9 m) long and 82 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS 12th Ave
CrossesRodeo Wash
Location0.02 MI S of Columbia ST
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.1724, -110.9776
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span21 ft (6.4 m)
Deck width82 ft (25 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,810 (2023)
Projected traffic16,820 by 2042
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S 12th Ave over Rodeo Wash built?

It was built in 1960, making it 65 years old in 2025.

What condition is S 12th Ave over Rodeo 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 July 2023.

How much traffic does S 12th Ave over Rodeo Wash carry?

About 16,810 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S 12th Ave over Rodeo Wash?

The structure is 62 ft (18.9 m) long with a longest span of 21 ft (6.4 m) and a deck 82 ft wide.

Who owns S 12th Ave over Rodeo Wash?

It is owned by the City or Municipal Highway Agency.