Structure 29C0129 · San Joaquin County, CA

Dustin RD over Dry Creek

Carries Dustin RD over Dry Creek, 0.8 Mi N Liberty Road.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT417 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 7/9

417 ft end to end, longest span 28 ft: about 6 semi-trucks nose to tail. 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 slab bridge.

Built197452 years old
Length417.0 ft127.1 m
Daily traffic846counted 2013
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountySan Joaquin
Location0.8 Mi N Liberty Road
CarriesDustin RD
CrossesDry Creek
Coordinates38.24527, -121.22659

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length417.0 ft (127.1 m)
Max Span27.9 ft (8.5 m)
Deck Width28.5 ft (8.7 m)
Deck Area1105.8 sq m
Main Spans15
Year Built1974

Traffic

Avg Daily Traffic846 (2013)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number29C0129

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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