Structure 18C0031 · Sutter County, CA

Franklin Road over Sutter Bypass W Channel

Carries Franklin Road over Sutter Bypass W Channel, 1.2 Mi E Tarke 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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT200 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

200 ft end to end, longest span 40 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 slab bridge.

Built200125 years old
Length200.1 ft61 m
Daily traffic242counted 2015
Last inspectedFebruary 2024every 48 months

Location

StateCalifornia
CountySutter
Location1.2 Mi E Tarke RD
CarriesFranklin Road
CrossesSutter Bypass W Channel
Coordinates39.12759, -121.81663

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length200.1 ft (61 m)
Max Span40.0 ft (12.2 m)
Deck Width30.5 ft (9.3 m)
Deck Area567.3 sq m
Main Spans5
Year Built2001

Traffic

Avg Daily Traffic242 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number18C0031

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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