US Bridges

Speedway Blvd over Santa Cruz River

Fair

Pima County, Arizona · Speedway W of I 10 · Structure no. 09006

Built
1955
70 years old, rebuilt 1974
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
225 ft
4 main spans
Daily traffic
18,032
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Speedway Blvd over Santa Cruz River is a steel continuous stringer/multi-beam or girder carrying Speedway Blvd over Santa Cruz River in Pima County, Arizona. It was built in 1955 and reconstructed in 1974, so it is 70 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 18,032 vehicles a day, roughly 10% of them trucks, projected to reach 18,042 by 2042. The structure is 225 ft (68.6 m) long and 88 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSpeedway Blvd
CrossesSanta Cruz River
LocationSpeedway W of I 10
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2356, -110.9861
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span60 ft (18.3 m)
Deck width88 ft (26.7 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deck35 ft (10.7 m)

Traffic and service

Average daily traffic18,032 (2022)
Projected traffic18,042 by 2042
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Speedway Blvd over Santa Cruz River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1974.

What condition is Speedway Blvd over Santa Cruz River 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 August 2023.

How much traffic does Speedway Blvd over Santa Cruz River carry?

About 18,032 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Speedway Blvd over Santa Cruz River?

The structure is 225 ft (68.6 m) long with a longest span of 60 ft (18.3 m) and a deck 88 ft wide.

Who owns Speedway Blvd over Santa Cruz River?

It is owned by the City or Municipal Highway Agency.