Structure 29 0158 · San Joaquin County, CA

Cherokee RD over State Route 99

Carries Cherokee RD over State Route 99, 10-sj-099-20.88.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT239 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

239 ft end to end, longest span 79 ft: about 3 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 multi-beam bridge.

Built196165 years old
Length238.8 ft72.8 m
Daily traffic5,300counted 1998
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountySan Joaquin
Location10-sj-099-20.88
CarriesCherokee RD
CrossesState Route 99
Coordinates37.99181, -121.25293

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length238.8 ft (72.8 m)
Max Span79.1 ft (24.1 m)
Deck Width40.4 ft (12.3 m)
Deck Area895.4 sq m
Main Spans2
Year Built1961

Traffic

Avg Daily Traffic5,300 (1998)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number29 0158

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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