Structure 10F0055 · Mendocino County, CA

Forest Road 300 over North Fk Of Sout Fk Noyo

Carries Forest Road 300 over North Fk Of Sout Fk Noyo, Ne/o San Felipe RD.

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 FT35 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

35 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.

Built195868 years old
Length35.4 ft10.8 m
Daily traffic50counted 2009
Last inspectedMay 2023every 24 months

Location

StateCalifornia
CountyMendocino
LocationNe/o San Felipe RD
CarriesForest Road 300
CrossesNorth Fk Of Sout Fk Noyo
Coordinates39.39181, -123.68546

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length35.4 ft (10.8 m)
Max Span34.4 ft (10.5 m)
Deck Width18.4 ft (5.6 m)
Deck Area60.5 sq m
Main Spans1
Year Built1958

Traffic

Avg Daily Traffic50 (2009)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number10F0055

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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