Structure 6C0148 · Shasta County, CA

Cedars RD over Oregon Gulch

Carries Cedars RD over Oregon Gulch, .1 Mi N/o Kenyon DR.

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 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

37 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 slab bridge.

Built195274 years old
Length37.1 ft11.3 m
Daily traffic500counted 2014
Last inspectedMarch 2024every 48 months

Location

StateCalifornia
CountyShasta
Location.1 Mi N/o Kenyon DR
CarriesCedars RD
CrossesOregon Gulch
Coordinates40.54491, -122.38946

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length37.1 ft (11.3 m)
Max Span35.1 ft (10.7 m)
Deck Width24.0 ft (7.3 m)
Deck Area82.5 sq m
Main Spans1
Year Built1952

Traffic

Avg Daily Traffic500 (2014)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number06C0148

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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