Structure 6 0147L · Shasta County, CA

Interstate 5 SB over Power Line Road

Carries Interstate 5 SB over Power Line Road, 02-sha-005-r30.23l.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

100 ft end to end, longest span 37 ft. 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.

Built196858 years old
Length99.7 ft30.4 m
Daily traffic9,150counted 2009
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountyShasta
Location02-sha-005-r30.23l
CarriesInterstate 5 SB
CrossesPower Line Road
Coordinates40.78332, -122.32222

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length99.7 ft (30.4 m)
Max Span37.1 ft (11.3 m)
Deck Width42.0 ft (12.8 m)
Deck Area389.1 sq m
Main Spans3
Year Built1968

Traffic

Avg Daily Traffic9,150 (2009)
Truck Traffic32%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number06 0147L

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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