Structure 2360026P0000000 · Pima County, AZ

Dirt Road over S. Kolb Rd.

Carries Dirt Road over S. Kolb Rd., S. Of Yuma.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT155 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

155 ft end to end, longest span 75 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck 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 bridge of this kind.

Built201016 years old
Length154.9 ft47.2 m
Daily traffic30counted 2021
Last inspectedDecember 2024every 24 months

Location

StateArizona
CountyPima
LocationS. Of Yuma
CarriesDirt Road
CrossesS. Kolb Rd.
Coordinates32.14447, -110.84070

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignOther
Total Length154.9 ft (47.2 m)
Max Span75.1 ft (22.9 m)
Deck Width23.0 ft (7 m)
Deck Area330.4 sq m
Main Spans2
Year Built2010

Traffic

Avg Daily Traffic30 (2021)
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerAir Force
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2360026P0000000

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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