Structure 8953 · Pinal County, AZ

La Palma RD over Santa Rosa Canal

Carries La Palma RD over Santa Rosa Canal, 1.0 Mi N Jct Houser RD.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

72 ft end to end. 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 multi-beam bridge.

Built198541 years old
Length71.9 ft21.9 m
Daily traffic100counted 2024
Last inspectedMarch 2024every 24 months

Location

StateArizona
CountyPinal
Location1.0 Mi N Jct Houser RD
CarriesLa Palma RD
CrossesSanta Rosa Canal
Coordinates32.79190, -111.53270

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length71.9 ft (21.9 m)
Max Span69.9 ft (21.3 m)
Deck Width35.1 ft (10.7 m)
Deck Area234.3 sq m
Main Spans1
Year Built1985

Traffic

Avg Daily Traffic100 (2024)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number08953

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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