Structure 41C0090 · Madera County, CA

Road 4 over Eastside Bypass Channel

Carries Road 4 over Eastside Bypass Channel, 1.2 Mi North Of AVE 18.5.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT470 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

470 ft end to end, longest span 24 ft: about 7 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.

Built196561 years old
Length470.1 ft143.3 m
Daily traffic200counted 1979
Last inspectedMarch 2023every 24 months

Location

StateCalifornia
CountyMadera
Location1.2 Mi North Of AVE 18.5
CarriesRoad 4
CrossesEastside Bypass Channel
Coordinates37.03070, -120.47360

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length470.1 ft (143.3 m)
Max Span24.0 ft (7.3 m)
Deck Width30.2 ft (9.2 m)
Deck Area1318.4 sq m
Main Spans20
Year Built1965

Traffic

Avg Daily Traffic200 (1979)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number41C0090

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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