Structure 32C0079 · Tuolumne County, CA

Mono Way over Sullivan Creek

Carries Mono Way over Sullivan Creek, 0.5 Mi E Of HWY 108.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure7/9 · Good
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 7/9Substructure 5/9

120 ft end to end, longest span 59 ft. 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 tee-beam bridge.

Built199135 years old
Length120.1 ft36.6 m
Daily traffic25,060counted 2015
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountyTuolumne
Location0.5 Mi E Of HWY 108
CarriesMono Way
CrossesSullivan Creek
Coordinates37.97530, -120.34891

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length120.1 ft (36.6 m)
Max Span59.1 ft (18 m)
Deck Width79.4 ft (24.2 m)
Deck Area885.7 sq m
Main Spans2
Year Built1991

Traffic

Avg Daily Traffic25,060 (2015)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number32C0079

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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