Structure 12 0070L · Butte County, CA

State Route 149 SB over Dry Creek

Carries State Route 149 SB over Dry Creek, 03-but-149-r3.50.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT210 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

210 ft end to end, longest span 60 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.

Built200818 years old
Length210.0 ft64 m
Daily traffic6,875counted 2021
Last inspectedApril 2023every 48 months

Location

StateCalifornia
CountyButte
Location03-but-149-r3.50
CarriesState Route 149 SB
CrossesDry Creek
Coordinates39.60750, -121.67219

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length210.0 ft (64 m)
Max Span60.0 ft (18.3 m)
Deck Width42.0 ft (12.8 m)
Deck Area819.2 sq m
Main Spans4
Year Built2008

Traffic

Avg Daily Traffic6,875 (2021)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number12 0070L

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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