Structure 25C0136 · El Dorado County, CA

Greenstone Road over Slate Creek

Carries Greenstone Road over Slate Creek, 0.6 Mi N Of Motherlode DR.

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 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

38 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 slab bridge.

Built20206 years old
Length38.1 ft11.6 m
Daily traffic1,284counted 2012
Last inspectedJuly 2022every 48 months

Location

StateCalifornia
CountyEl Dorado
Location0.6 Mi N Of Motherlode DR
CarriesGreenstone Road
CrossesSlate Creek
Coordinates38.68182, -120.88782

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length38.1 ft (11.6 m)
Max Span34.1 ft (10.4 m)
Deck Width33.5 ft (10.2 m)
Deck Area118.3 sq m
Main Spans1
Year Built2020

Traffic

Avg Daily Traffic1,284 (2012)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number25C0136

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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