Structure 38C0044 · Stanislaus County, CA

Mitchell Road over Tuolumne River

Carries Mitchell Road over Tuolumne River, 0.55 Mi S Finch RD.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT657 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 7/9Substructure 7/9

657 ft end to end, longest span 100 ft: about 1.8 football fields. 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.

Built1958rebuilt 1988
Length657.2 ft200.3 m
Daily traffic37,377counted 2005
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyStanislaus
Location0.55 Mi S Finch RD
CarriesMitchell Road
CrossesTuolumne River
Coordinates37.61606, -120.93851

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length657.2 ft (200.3 m)
Max Span100.1 ft (30.5 m)
Deck Width87.9 ft (26.8 m)
Deck Area5368.0 sq m
Main Spans7
Year Built1958 (reconstructed 1988)

Traffic

Avg Daily Traffic37,377 (2005)
Truck Traffic17%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number38C0044

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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