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Zinfadel Bridge - St. Helena CA
Posted by: Groundspeak Regular Member GT.US
N 38° 29.716 W 122° 25.525
10S E 550105 N 4260924
Quick Description: This old stone arch bridge crosses the Napa River in Napa County, California.
Location: California, United States
Date Posted: 12/6/2010 6:02:47 PM
Waymark Code: WMA97P
Published By: Groundspeak Charter Member GEO*Trailblazer 1
Views: 0

Long Description:
Bridge Hunter provides these factes at (visit link) :

Stone arch bridge over Napa River on Zinfandel Lane
LocationNapa County, California
Open to traffic
Built 1913
Stone arch
Length of largest span: 43.0 ft.
Total length: 95.1 ft.
Deck width: 19.4 ft.

Eligible for the National Register of Historic Places
Approximate latitude, longitude
+38.49500, -122.42583 (decimal degrees)
38°29'42" N, 122°25'33" W (degrees°minutes'seconds")
Approximate UTM coordinates
10/550069/4260894 (zone/easting/northing)
USGS topographic map
Inventory numbers
CA 21C-2 (California bridge number)
BH 11218 ( ID)
Inspection (as of 10/2007)
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Serious (3 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 6.0 (out of 100)

Average daily traffic (as of 2005)
Length of bridge: 95.1 ft

What type of traffic does this bridge support?: motor vehicle

What kind of gap does this bridge cross?:
Napa River

Is the bridge still in service for its original purpose?: 1913

Name of road or trail the bridge services: Zinfadel Lane

Zinfadel, Napa County, California

Height of bridge: Not listed

Date constructed: Not listed

Visit Instructions:
Please submit a photo(s) taken by you of your visit to the location (non-copyrighted photos only). GPS photos are also accepted with the location in the background, and old vacation photos are accepted. If you are not able to provide a photo, then please describe your visit or give a story about the visit. If the bridge location prevents you from taking a safe photograph, then please do not stop to take the photo. Safety is more important.
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