Structure 4324 · Greenlee County, AZ

US 70 over Wash

Carries US 70 over Wash, 5.2 Mi W Jct SR 75.

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 FT38 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 38 ft across with 3 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.

Built195175 years old
Length38.1 ft11.6 m
Daily traffic1,052counted 2021
Last inspectedJuly 2023every 48 months

Location

StateArizona
CountyGreenlee
Location5.2 Mi W Jct SR 75
CarriesUS 70
CrossesWash
Coordinates32.72585, -109.17485

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length38.1 ft (11.6 m)
Max Span12.1 ft (3.7 m)
Deck Area141.5 sq m
Main Spans3
Year Built1951

Traffic

Avg Daily Traffic1,052 (2021)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number04324

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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