Structure 39C0150 · Merced County, CA

Dan Mc Namara Road over Owens Creek

Carries Dan Mc Namara Road over Owens Creek, 0.2 Mi S Green House RD.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

53 ft end to end, longest span 18 ft. Lengths and the car 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 multi-beam bridge.

Built193096 years old
Length53.1 ft16.2 m
Daily traffic297counted 1990
Last inspectedNovember 2024every 24 months

Location

StateCalifornia
CountyMerced
Location0.2 Mi S Green House RD
CarriesDan Mc Namara Road
CrossesOwens Creek
Coordinates37.22723, -120.67042

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length53.1 ft (16.2 m)
Max Span17.7 ft (5.4 m)
Deck Width25.6 ft (7.8 m)
Deck Area126.4 sq m
Main Spans3
Year Built1930

Traffic

Avg Daily Traffic297 (1990)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number39C0150

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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