US Bridges

Speedway Blvd over Pantano Wash

Fair

Pima County, Arizona · 0.4 MI E JCT Kolb Road · Structure no. 09568

Built
1977
48 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
363 ft
6 main spans
Daily traffic
38,203
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Speedway Blvd over Pantano Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying Speedway Blvd over Pantano Wash in Pima County, Arizona. It was built in 1977, so it is 48 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 38,203 vehicles a day, roughly 5% of them trucks, projected to reach 38,213 by 2042. The structure is 363 ft (110.6 m) long and 135 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSpeedway Blvd
CrossesPantano Wash
Location0.4 MI E JCT Kolb Road
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2356, -110.8373
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating41 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length363 ft (110.6 m)
Longest span60 ft (18.3 m)
Deck width135 ft (41.1 m)
Roadway width120 ft (36.6 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic38,203 (2022)
Projected traffic38,213 by 2042
Trucks5%
Lanes on structure6
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Speedway Blvd over Pantano Wash built?

It was built in 1977, making it 48 years old in 2025.

What condition is Speedway Blvd over Pantano 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 December 2023.

How much traffic does Speedway Blvd over Pantano Wash carry?

About 38,203 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Speedway Blvd over Pantano Wash?

The structure is 363 ft (110.6 m) long with a longest span of 60 ft (18.3 m) and a deck 135 ft wide.

Who owns Speedway Blvd over Pantano Wash?

It is owned by the City or Municipal Highway Agency.