Structure 38C0048 · Stanislaus County, CA

Geer Road over Tuolumne River

Carries Geer Road over Tuolumne River, 1.3 Mi S State Route 132.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT656 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

656 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.

Built196066 years old
Length655.8 ft199.9 m
Daily traffic13,202counted 2016
Last inspectedSeptember 2023every 24 months

Location

StateCalifornia
CountyStanislaus
Location1.3 Mi S State Route 132
CarriesGeer Road
CrossesTuolumne River
Coordinates37.61721, -120.84539

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length655.8 ft (199.9 m)
Max Span100.1 ft (30.5 m)
Deck Width33.5 ft (10.2 m)
Deck Area2039.0 sq m
Main Spans7
Year Built1960

Traffic

Avg Daily Traffic13,202 (2016)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number38C0048

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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