Rating:
1 vote

Sulphur Creek Bridge

Photos 

Sulphur Creek, Main St, St Helena, CA

photo looking SW from NE side

Photo taken by Craig Philpott in August 2009

Enlarge

BH Photo #145185

Map 

Street View 

Facts 

Overview
Stone arch bridge over Sulphur Creek on CA 29 in Saint Helena
Location
St. Helena, Napa County, California
Status
Open to traffic
History
Built 1910; rehabilitated, concrete bike path, W side added, 1975
Builders
- A. Martini & Co. (Builder)
- G. H. Wallace (Engineer)
Design
Stone arch
Dimensions
Length of largest span: 59.1 ft.
Total length: 65.9 ft.
Deck width: 33.8 ft.
Also called
Main Street Bridge
Approximate latitude, longitude
+38.50333, -122.46500   (decimal degrees)
38°30'12" N, 122°27'54" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/546648/4261798 (zone/easting/northing)
Quadrangle map:
Saint Helena
Elevation
223 ft. above sea level
Inventory numbers
CA 21-16 (California bridge number)
BH 11214 (Bridgehunter.com ID)
Inspection (as of 04/2015)
Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 55.0 (out of 100)
Average daily traffic (as of 2009)
18,200

Update Log 

  • February 7, 2016: New Street View added by Dave King
  • August 13, 2009: Updated by Craig Philpott: added builder info

Sources