Structure 6 0121 · Shasta County, CA

Interstate 5 over Shotgun Creek

Carries Interstate 5 over Shotgun Creek, 02-sha-005-r55.59.

Overall conditionFair

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

How ratings work
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9 · sets the ratingSubstructure 7/9

27 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 deck arch.

Built195769 years old
Length26.9 ft8.2 m
Daily traffic17,100counted 2009
Last inspectedMarch 2024every 24 months

Location

StateCalifornia
CountyShasta
Location02-sha-005-r55.59
CarriesInterstate 5
CrossesShotgun Creek
Coordinates41.05204, -122.37971

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length26.9 ft (8.2 m)
Max Span22.0 ft (6.7 m)
Deck Area819.2 sq m
Main Spans1
Year Built1957

Traffic

Avg Daily Traffic17,100 (2009)
Truck Traffic32%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number06 0121

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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