Structure 9C0161 · Plumas County, CA

Bucks Lake Road over Big Grizzley Creek

Carries Bucks Lake Road over Big Grizzley Creek, 1.7mi W Bucks Lake Dam RD.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

104 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 multi-beam bridge.

Built201115 years old
Length104.0 ft31.7 m
Daily traffic350counted 2019
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyPlumas
Location1.7mi W Bucks Lake Dam RD
CarriesBucks Lake Road
CrossesBig Grizzley Creek
Coordinates39.86456, -121.22387

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span104.0 ft (31.7 m)
Deck Width33.1 ft (10.1 m)
Deck Area320.2 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic350 (2019)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number09C0161

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.

Nearby Bridges