Structure 4C0124 · Humboldt County, CA

Brookwood Drive over Jacoby Creek

Carries Brookwood Drive over Jacoby Creek, 0.1 Mi S/o Jacoby Crk RD.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

68 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.

Built196759 years old
Length67.9 ft20.7 m
Daily traffic162counted 2011
Last inspectedJune 2023every 24 months

Location

StateCalifornia
CountyHumboldt
Location0.1 Mi S/o Jacoby Crk RD
CarriesBrookwood Drive
CrossesJacoby Creek
Coordinates40.83201, -124.04539

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length67.9 ft (20.7 m)
Max Span60.0 ft (18.3 m)
Deck Width19.7 ft (6 m)
Deck Area124.2 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic162 (2011)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number04C0124

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