Structure 7182 · Pima County, AZ

I-10 EB WB & Frs over Drainage Way

Carries I-10 EB WB & Frs over Drainage Way, 1.6 Mi N Jct I-19.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 24 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built201016 years old
Length24.0 ft7.3 m
Daily traffic169,529counted 2020
Last inspectedNovember 2021every 48 months

Location

StateArizona
CountyPima
Location1.6 Mi N Jct I-19
CarriesI-10 EB WB & Frs
CrossesDrainage Way
Coordinates32.21780, -110.97970

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length24.0 ft (7.3 m)
Max Span9.8 ft (3 m)
Deck Area311.7 sq m
Main Spans2
Year Built2010

Traffic

Avg Daily Traffic169,529 (2020)
Truck Traffic9%
Lanes On Bridge12

Inspection & Ownership

Last InspectionNovember 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number07182

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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