Zinfadel Bridge - St. Helena CA
Posted by: GT.US
N 38° 29.716 W 122° 25.525
10S E 550105 N 4260924
This old stone arch bridge crosses the Napa River in Napa County, California.
Waymark Code: WMA97P
Location: California, United States
Date Posted: 12/06/2010
Views: 2
Bridge Hunter provides these factes at (
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"Overview
Stone arch bridge over Napa River on Zinfandel Lane
LocationNapa County, California
Status
Open to traffic
History
Built 1913
Design
Stone arch
Dimensions
Length of largest span: 43.0 ft.
Total length: 95.1 ft.
Deck width: 19.4 ft.
Recognition
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
Rutherford
Inventory numbers
CA 21C-2 (California bridge number)
BH 11218 (Bridgehunter.com 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)
2,600