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Arnold Drive Bridge

Sonoma County, California
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Photos 

Arnold Drive Bridge

Looking North.

Photo taken by Craig Philpott in December 2009

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Map 

Street View 

View Uglybridges.com report

Facts 

Overview
Parker Through truss bridge over Sonoma Creek on Arnold Drive
Location
Sonoma County, California
Status
Open to traffic
History
Built 1930
Design
Parker Through truss
Dimensions
Length of largest span: 140.1 ft.
Total length: 143.1 ft.
Deck width: 24.3 ft.
Vertical clearance above deck: 12.7 ft.
Approximate latitude, longitude
+38.35083, -122.51889   (decimal degrees)
38°21'03" N, 122°31'08" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/542038/4244851 (zone/easting/northing)
USGS topographic map
Glen Ellen
Inventory numbers
CA 20C-213 (California bridge number)
BH 11602 (Bridgehunter.com ID)
Inspection (as of 02/2011)
Deck condition rating: Imminent Failure (1 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 27.8 (out of 100)
Average daily traffic (as of 2010)
13,900

Categories 

Built 1930 (1,238)
Built during 1930s (8,552)
California (1,615)
Have street view (9,883)
Open (28,301)
Owned by county (16,483)
Sonoma County, California (67)
 Span length 125-175 feet (2,951)
Structurally deficient (16,677)
Through truss (9,202)
Total length 125-175 feet (4,136)
Truss (23,562)
Warren through truss (925)
Warren truss (3,956)

Update Log 

  • August 31, 2010: Updated by Matthew Lohry: Corrected bridge design--this is a textbook example of a Parker through truss; Camelback bridges have 5-sided upper chords--this bridge's upper chords have 7 sides each.
  • May 15, 2010: New Street View added by Craig Philpott
  • February 18, 2010: Updated by Craig Philpott: corrected design
  • December 27, 2009: New photo from Craig Philpott

Sources 

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