Structure 9308 · Maricopa County, AZ

56th Street over Arizona Canal

Carries 56th Street over Arizona Canal, 0.01 Mi N Of Indian Schoo.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

61 ft end to end, longest span 20 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built1946rebuilt 1962
Length61.0 ft18.6 m
Daily traffic13,080counted 2021
Last inspectedJanuary 2023every 24 months

Location

StateArizona
CountyMaricopa
Location0.01 Mi N Of Indian Schoo
Carries56th Street
CrossesArizona Canal
Coordinates33.48910, -111.96080

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length61.0 ft (18.6 m)
Max Span20.0 ft (6.1 m)
Deck Width80.4 ft (24.5 m)
Deck Area455.7 sq m
Main Spans3
Year Built1946 (reconstructed 1962)

Traffic

Avg Daily Traffic13,080 (2021)
Truck Traffic1%
Lanes On Bridge5

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number09308

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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