Structure B 673 · Clark County, NV

SR 146 over Sloan Wash

Carries SR 146 over Sloan Wash, Near Sloan.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT59 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 59 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.

Built196165 years old
Length59.1 ft18 m
Daily traffic33,500counted 2021
Last inspectedDecember 2020every 48 months

Location

StateNevada
CountyClark
LocationNear Sloan
CarriesSR 146
CrossesSloan Wash
Coordinates35.96516, -115.17426

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length59.1 ft (18 m)
Max Span14.1 ft (4.3 m)
Deck Area959.4 sq m
Main Spans4
Year Built1961

Traffic

Avg Daily Traffic33,500 (2021)
Truck Traffic10%
Lanes On Bridge12

Inspection & Ownership

Last InspectionDecember 2020
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB 673

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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