Structure H3059 · Clark County, NV

Cd-s/ch3a over Alta

Carries Cd-s/ch3a over Alta, Neon.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT134 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

134 ft end to end. 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 multi-beam bridge.

Built20179 years old
Length133.9 ft40.8 m
Daily traffic7,200counted 2021
Last inspectedDecember 2020every 48 months

Location

StateNevada
CountyClark
LocationNeon
CarriesCd-s/ch3a
CrossesAlta
Coordinates36.16623, -115.16071

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length133.9 ft (40.8 m)
Max Span133.9 ft (40.8 m)
Deck Width64.0 ft (19.5 m)
Deck Area795.6 sq m
Main Spans1
Year Built2017

Traffic

Avg Daily Traffic7,200 (2021)
Lanes On Bridge3
Lanes Under Bridge8

Inspection & Ownership

Last InspectionDecember 2020
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberH3059

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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