US Bridges

Indian School Road over Grand Canal

Fair

Maricopa County, Arizona · 0.23 MI E of 67th Avenue · Structure no. 09202

Built
1953
72 years old, rebuilt 1974
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
40 ft
2 main spans
Daily traffic
37,171
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Indian School Road over Grand Canal is a concrete continuous slab carrying Indian School Road over Grand Canal in Maricopa County, Arizona. It was built in 1953 and reconstructed in 1974, so it is 72 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 37,171 vehicles a day, roughly 2% of them trucks, projected to reach 37,181 by 2041. The structure is 40 ft (12.2 m) long and 76 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIndian School Road
CrossesGrand Canal
Location0.23 MI E of 67th Avenue
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4949, -112.1992
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width76 ft (23.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,171 (2021)
Projected traffic37,181 by 2041
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Indian School Road over Grand Canal built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1974.

What condition is Indian School Road 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 January 2025.

How much traffic does Indian School Road over Grand Canal carry?

About 37,171 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Indian School Road over Grand Canal?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 76 ft wide.

Who owns Indian School Road over Grand Canal?

It is owned by the City or Municipal Highway Agency.