Structure H1798 · Washoe County, NV

I 580 over Sr659 Mccarran Bl

Carries I 580 over Sr659 Mccarran Bl, South Reno.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT218 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

218 ft end to end, longest span 107 ft: about 3 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 multi-beam bridge.

Built198640 years old
Length217.8 ft66.4 m
Daily traffic86,000counted 2021
Last inspectedMay 2024every 48 months

Location

StateNevada
CountyWashoe
LocationSouth Reno
CarriesI 580
CrossesSr659 Mccarran Bl
Coordinates39.47692, -119.79090

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length217.8 ft (66.4 m)
Max Span107.0 ft (32.6 m)
Deck Width149.9 ft (45.7 m)
Deck Area3034.5 sq m
Main Spans2
Year Built1986

Traffic

Avg Daily Traffic86,000 (2021)
Truck Traffic6%
Lanes On Bridge8
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberH1798

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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