US Bridges

Dobson Road over Tempe Canal

Fair

Maricopa County, Arizona · 0.1 MI N University · Structure no. 09394

Built
1975
50 years old, rebuilt 1993
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
77 ft
2 main spans
Daily traffic
19,491
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Dobson Road over Tempe Canal is a concrete continuous slab carrying Dobson Road over Tempe Canal in Maricopa County, Arizona. It was built in 1975 and reconstructed in 1993, so it is 50 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 19,491 vehicles a day, roughly 5% of them trucks, projected to reach 19,501 by 2042. The structure is 77 ft (23.5 m) long and 107 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDobson Road
CrossesTempe Canal
Location0.1 MI N University
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.42424, -111.87434
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span37 ft (11.3 m)
Deck width107 ft (32.5 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,491 (2023)
Projected traffic19,501 by 2042
Trucks5%
Lanes on structure7
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 Dobson Road over Tempe Canal built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1993.

What condition is Dobson Road over Tempe Canal 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 September 2024.

How much traffic does Dobson Road over Tempe Canal carry?

About 19,491 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Dobson Road over Tempe Canal?

The structure is 77 ft (23.5 m) long with a longest span of 37 ft (11.3 m) and a deck 107 ft wide.

Who owns Dobson Road over Tempe Canal?

It is owned by the City or Municipal Highway Agency.