Structure 26 0019 · Amador County, CA

State Route 88 over Jackson Creek

Carries State Route 88 over Jackson Creek, 10-ama-088-3.09.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT228 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

228 ft end to end, longest span 24 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 slab bridge.

Built1940rebuilt 2013
Length228.0 ft69.5 m
Daily traffic9,200counted 2009
Last inspectedApril 2023every 24 months

Location

StateCalifornia
CountyAmador
Location10-ama-088-3.09
CarriesState Route 88
CrossesJackson Creek
Coordinates38.30702, -120.97791

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length228.0 ft (69.5 m)
Max Span24.0 ft (7.3 m)
Deck Width43.0 ft (13.1 m)
Deck Area910.5 sq m
Main Spans11
Year Built1940 (reconstructed 2013)

Traffic

Avg Daily Traffic9,200 (2009)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number26 0019

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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