Structure 41C0222 · Madera County, CA

Avenue 25 over Ash Slough

Carries Avenue 25 over Ash Slough, 0.5 Mi E Of Road 12.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT320 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

320 ft end to end, longest span 36 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.

Built20242 years old
Length319.6 ft97.4 m
Daily traffic1,000counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateCalifornia
CountyMadera
Location0.5 Mi E Of Road 12
CarriesAvenue 25
CrossesAsh Slough
Coordinates37.11383, -120.32087

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length319.6 ft (97.4 m)
Max Span36.4 ft (11.1 m)
Deck Width35.4 ft (10.8 m)
Deck Area1051.9 sq m
Main Spans9
Year Built2024

Traffic

Avg Daily Traffic1,000 (2024)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number41C0222

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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