Structure 13C0006 · Sierra County, CA

Nevada Street over North Fork Yuba River

Carries Nevada Street over North Fork Yuba River, South Of SR 49.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT197 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

197 ft end to end: 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 through truss.

Built193888 years old
Length196.5 ft59.9 m
Daily traffic500counted 2006
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountySierra
LocationSouth Of SR 49
CarriesNevada Street
CrossesNorth Fork Yuba River
Coordinates39.55945, -120.82939

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length196.5 ft (59.9 m)
Max Span140.1 ft (42.7 m)
Deck Width17.1 ft (5.2 m)
Deck Area311.5 sq m
Main Spans1
Year Built1938

Traffic

Avg Daily Traffic500 (2006)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number13C0006

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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