Structure 13C0003 · Sierra County, CA

Pearl Street over Downie River

Carries Pearl Street over Downie River, Downieville.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

118 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built1934rebuilt 1980
Length118.4 ft36.1 m
Daily traffic100counted 2006
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountySierra
LocationDownieville
CarriesPearl Street
CrossesDownie River
Coordinates39.56312, -120.82541

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length118.4 ft (36.1 m)
Max Span78.1 ft (23.8 m)
Deck Width12.1 ft (3.7 m)
Deck Area133.6 sq m
Main Spans1
Year Built1934 (reconstructed 1980)

Traffic

Avg Daily Traffic100 (2006)
Truck Traffic1%
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 Critical5 — Stable for scour
Structure Number13C0003

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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