US Bridges

Pima Street over Alamo Wash

Fair

Pima County, Arizona · 0.4 MI W JCT Wilmot RD · Structure no. 09790

Built
1991
34 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
19,484
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pima Street over Alamo Wash is a prestressed concrete box beam or girders - multiple carrying Pima Street over Alamo Wash in Pima County, Arizona. It was built in 1991, so it is 34 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 19,484 vehicles a day, roughly 5% of them trucks, projected to reach 19,494 by 2042. The structure is 62 ft (18.9 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPima Street
CrossesAlamo Wash
Location0.4 MI W JCT Wilmot RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2434, -110.8644
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating26 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span58 ft (17.7 m)
Deck width86 ft (26.2 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,484 (2022)
Projected traffic19,494 by 2042
Trucks5%
Lanes on structure4
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
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 Pima Street over Alamo Wash built?

It was built in 1991, making it 34 years old in 2025.

What condition is Pima Street over Alamo 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 March 2023.

How much traffic does Pima Street over Alamo Wash carry?

About 19,484 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Pima Street over Alamo Wash?

The structure is 62 ft (18.9 m) long with a longest span of 58 ft (17.7 m) and a deck 86 ft wide.

Who owns Pima Street over Alamo Wash?

It is owned by the City or Municipal Highway Agency.