Structure 2C0140 · Siskiyou County, CA

Caribou Road over South Fork Salmon River

Carries Caribou Road over South Fork Salmon River, 4 Mi S/o Cecilville Road.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT222 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

222 ft end to end, longest span 90 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 box-beam bridge.

Built198442 years old
Length222.1 ft67.7 m
Daily traffic48counted 2011
Last inspectedAugust 2021every 48 months

Location

StateCalifornia
CountySiskiyou
Location4 Mi S/o Cecilville Road
CarriesCaribou Road
CrossesSouth Fork Salmon River
Coordinates41.10098, -123.07839

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length222.1 ft (67.7 m)
Max Span89.9 ft (27.4 m)
Deck Width24.6 ft (7.5 m)
Deck Area507.8 sq m
Main Spans3
Year Built1984

Traffic

Avg Daily Traffic48 (2011)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number02C0140

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