Structure 29C0411 · San Joaquin County, CA

Jack Tone Road over N Fk S Littlejohns Creek

Carries Jack Tone Road over N Fk S Littlejohns Creek, 0.4 Mi N/o E Verdon RD.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT713 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

713 ft end to end, longest span 139 ft: about 2.0 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
Length712.9 ft217.3 m
Daily traffic3,684counted 2019
Last inspectedJanuary 2025every 24 months

Location

StateCalifornia
CountySan Joaquin
Location0.4 Mi N/o E Verdon RD
CarriesJack Tone Road
CrossesN Fk S Littlejohns Creek
Coordinates37.88923, -121.14661

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length712.9 ft (217.3 m)
Max Span139.1 ft (42.4 m)
Deck Width43.0 ft (13.1 m)
Deck Area2846.6 sq m
Main Spans6
Year Built2004

Traffic

Avg Daily Traffic3,684 (2019)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number29C0411

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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