Structure 38C0330 · Stanislaus County, CA

9th Street over Tuolumne River River RD

Carries 9th Street over Tuolumne River River RD, 0.1 Mi N/o River Rd..

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
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 FT2,011 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

2,011 ft end to end, longest span 203 ft: about 5.6 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.

Built200422 years old
Length2011.2 ft613 m
Daily traffic24,390counted 2018
Last inspectedAugust 2024every 24 months

Location

StateCalifornia
CountyStanislaus
Location0.1 Mi N/o River Rd.
Carries9th Street
CrossesTuolumne River River RD
Coordinates37.62641, -120.98695

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length2011.2 ft (613 m)
Max Span203.4 ft (62 m)
Deck Width83.3 ft (25.4 m)
Deck Area15570.2 sq m
Main Spans16
Year Built2004

Traffic

Avg Daily Traffic24,390 (2018)
Truck Traffic4%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number38C0330

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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