Structure 41C0101 · Madera County, CA

Road 8 over Ash Slough

Carries Road 8 over Ash Slough, 0.3 Miles South Of AVE 22.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT302 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

302 ft end to end, longest span 30 ft: about 4 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.

Built196957 years old
Length301.8 ft92 m
Daily traffic260counted 1980
Last inspectedMarch 2021every 48 months

Location

StateCalifornia
CountyMadera
Location0.3 Miles South Of AVE 22
CarriesRoad 8
CrossesAsh Slough
Coordinates37.06433, -120.40096

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length301.8 ft (92 m)
Max Span29.9 ft (9.1 m)
Deck Width30.5 ft (9.3 m)
Deck Area855.6 sq m
Main Spans10
Year Built1969

Traffic

Avg Daily Traffic260 (1980)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number41C0101

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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