Structure 39C0123 · Merced County, CA

Oslo Road over Lateral #6

Carries Oslo Road over Lateral #6, 0.5 Mi N August Avenue.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

24 ft end to end, longest span 12 ft. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built195076 years old
Length24.0 ft7.3 m
Daily traffic40counted 2014
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountyMerced
Location0.5 Mi N August Avenue
CarriesOslo Road
CrossesLateral #6
Coordinates37.42582, -120.85889

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length24.0 ft (7.3 m)
Max Span12.1 ft (3.7 m)
Deck Width22.0 ft (6.7 m)
Deck Area48.9 sq m
Main Spans2
Year Built1950

Traffic

Avg Daily Traffic40 (2014)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number39C0123

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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