Structure H2701 · Clark County, NV

US 93 over Hoover Dam Lower Access

Carries US 93 over Hoover Dam Lower Access, Lake Mead Nat Rec Area.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT166 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

166 ft end to end: about 2 semi-trucks nose to tail. 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 box-beam bridge.

Built201016 years old
Length166.0 ft50.6 m
Daily traffic18,300counted 2021
Last inspectedMarch 2024every 48 months

Location

StateNevada
CountyClark
LocationLake Mead Nat Rec Area
CarriesUS 93
CrossesHoover Dam Lower Access
Coordinates36.01334, -114.75864

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Single/Spread
Total Length166.0 ft (50.6 m)
Max Span166.0 ft (50.6 m)
Deck Width81.0 ft (24.7 m)
Deck Area1249.8 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic18,300 (2021)
Truck Traffic26%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberH2701

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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