Structure 11268 · Maricopa County, AZ

Miller RD over Channel

Carries Miller RD over Channel, Miller @ Los Gatos.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 60 ft across with 5 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.

Built199630 years old
Length60.0 ft18.3 m
Daily traffic14,310counted 2025
Last inspectedJanuary 2025every 48 months

Location

StateArizona
CountyMaricopa
LocationMiller @ Los Gatos
CarriesMiller RD
CrossesChannel
Coordinates33.69167, -111.91667

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length60.0 ft (18.3 m)
Max Span7.9 ft (2.4 m)
Deck Width142.1 ft (43.3 m)
Deck Area792.4 sq m
Main Spans5
Year Built1996

Traffic

Avg Daily Traffic14,310 (2025)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number11268

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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