Structure 6C0257 · Shasta County, CA

Thousand Spring RD over Bear Creek

Carries Thousand Spring RD over Bear Creek, 0.1 Mi East Elder 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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

42 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 tee-beam bridge.

Built198046 years old
Length42.0 ft12.8 m
Daily traffic100counted 2015
Last inspectedMay 2021every 48 months

Location

StateCalifornia
CountyShasta
Location0.1 Mi East Elder RD
CarriesThousand Spring RD
CrossesBear Creek
Coordinates41.13168, -121.57824

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length42.0 ft (12.8 m)
Max Span41.0 ft (12.5 m)
Deck Width16.7 ft (5.1 m)
Deck Area65.3 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic100 (2015)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number06C0257

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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