Structure 9C0016 · Plumas County, CA

Grnvile Wolf Ck RD over Wolf Creek

Carries Grnvile Wolf Ck RD over Wolf Creek, 150 Ft South Of SH 89.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

57 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.

Built196165 years old
Length57.1 ft17.4 m
Daily traffic10counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyPlumas
Location150 Ft South Of SH 89
CarriesGrnvile Wolf Ck RD
CrossesWolf Creek
Coordinates40.17478, -120.98571

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length57.1 ft (17.4 m)
Max Span53.1 ft (16.2 m)
Deck Width22.6 ft (6.9 m)
Deck Area120.1 sq m
Main Spans1
Year Built1961

Traffic

Avg Daily Traffic10 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number09C0016

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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