Structure 12 0165 · Butte County, CA

State Route 70 over Abandoned Rr Row

Carries State Route 70 over Abandoned Rr Row, 03-but-070-15.13-ovl.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT147 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

147 ft end to end, longest span 73 ft: about 2 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 tee-beam bridge.

Built196363 years old
Length147.3 ft44.9 m
Daily traffic20,100counted 2020
Last inspectedMay 2024every 24 months

Location

StateCalifornia
CountyButte
Location03-but-070-15.13-ovl
CarriesState Route 70
CrossesAbandoned Rr Row
Coordinates39.51542, -121.57205

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length147.3 ft (44.9 m)
Max Span73.2 ft (22.3 m)
Deck Width88.6 ft (27 m)
Deck Area1212.3 sq m
Main Spans3
Year Built1963

Traffic

Avg Daily Traffic20,100 (2020)
Truck Traffic15%
Lanes On Bridge4

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number12 0165

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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