Structure 6C0379 · Shasta County, CA

Twin View BLVD over Churn Creek

Carries Twin View BLVD over Churn Creek, 04 Mi South Of Oasis 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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT226 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

226 ft end to end, longest span 94 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.

Built201313 years old
Length226.4 ft69 m
Daily traffic1,400counted 2013
Last inspectedMay 2021every 48 months

Location

StateCalifornia
CountyShasta
Location04 Mi South Of Oasis RD
CarriesTwin View BLVD
CrossesChurn Creek
Coordinates40.63556, -122.36500

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length226.4 ft (69 m)
Max Span93.8 ft (28.6 m)
Deck Width67.6 ft (20.6 m)
Deck Area1421.4 sq m
Main Spans3
Year Built2013

Traffic

Avg Daily Traffic1,400 (2013)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2021
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number06C0379

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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