US Bridges

I 17; Efr & Wfr over Grand Canal

Fair

Maricopa County, Arizona · 2.6 MI North JCT I 10 · Structure no. 00410

Built
1954
71 years old, rebuilt 1959
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
43 ft
2 main spans
Daily traffic
219,478
2022 count
Owner
State
State Highway Agency

About this bridge

I 17; Efr & Wfr over Grand Canal is a concrete continuous slab carrying I 17; Efr & Wfr over Grand Canal in Maricopa County, Arizona. It was built in 1954 and reconstructed in 1959, so it is 71 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 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 219,478 vehicles a day, roughly 6% of them trucks, projected to reach 219,488 by 2042. The structure is 43 ft (13.1 m) long and 196 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI 17; Efr & Wfr
CrossesGrand Canal
Location2.6 MI North JCT I 10
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.49, -112.1131
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span21 ft (6.4 m)
Deck width196 ft (59.7 m)
Roadway width193 ft (58.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219,478 (2022)
Projected traffic219,488 by 2042
Trucks6%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 17; Efr & Wfr over Grand Canal built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1959.

What condition is I 17; Efr & Wfr over Grand 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 I 17; Efr & Wfr over Grand Canal carry?

About 219,478 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I 17; Efr & Wfr over Grand Canal?

The structure is 43 ft (13.1 m) long with a longest span of 21 ft (6.4 m) and a deck 196 ft wide.

Who owns I 17; Efr & Wfr over Grand Canal?

It is owned by the State Highway Agency.