Structure 4966 · Mohave County, AZ

US 93 over Wash

Carries US 93 over Wash, 31.5 Mi S Jct W/ I 40.

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 FT43 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 43 ft across with 4 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.

Built1953rebuilt 1994
Length43.0 ft13.1 m
Daily traffic9,582counted 2019
Last inspectedApril 2021every 48 months

Location

StateArizona
CountyMohave
Location31.5 Mi S Jct W/ I 40
CarriesUS 93
CrossesWash
Coordinates34.72510, -113.61500

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length43.0 ft (13.1 m)
Max Span9.8 ft (3 m)
Deck Width86.9 ft (26.5 m)
Deck Area347.1 sq m
Main Spans4
Year Built1953 (reconstructed 1994)

Traffic

Avg Daily Traffic9,582 (2019)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number04966

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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