Structure 18 0032 · Sutter County, CA

State Route 113 over Sutter Bypass

Carries State Route 113 over Sutter Bypass, 03-sut-113-r10.81.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
5,151 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

5,151 ft end to end, longest span 50 ft: about 14 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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
Length5150.9 ft1,570 m
Daily traffic5,600counted 2019
Last inspectedMay 2024every 24 months

Location

StateCalifornia
CountySutter
Location03-sut-113-r10.81
CarriesState Route 113
CrossesSutter Bypass
Coordinates38.95299, -121.67675

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length5150.9 ft (1,570 m)
Max Span49.9 ft (15.2 m)
Deck Width42.0 ft (12.8 m)
Deck Area20,096 sq m
Main Spans103
Year Built1968

Traffic

Avg Daily Traffic5,600 (2019)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number18 0032

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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