Structure 10862 · Maricopa County, AZ

91st AVE over Drainage Ditch

Carries 91st AVE over Drainage Ditch, @ Jct W/ Greenway RD.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 68 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built1990rebuilt 1994
Length67.9 ft20.7 m
Daily traffic8,066counted 2022
Last inspectedJune 2022every 48 months

Location

StateArizona
CountyMaricopa
Location@ Jct W/ Greenway RD
Carries91st AVE
CrossesDrainage Ditch
Coordinates33.62460, -112.25460

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length67.9 ft (20.7 m)
Max Span9.8 ft (3 m)
Deck Area403.6 sq m
Main Spans4
Year Built1990 (reconstructed 1994)

Traffic

Avg Daily Traffic8,066 (2022)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number10862

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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