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Aetna Springs Road Bridge

Photo taken by Craig Philpott in August 2009

Overview: Stone arch bridge over Swartz Creek on Aetna Springs Road
Location: Napa County, California
Status: Open to traffic
History: Built 1912
Builder: - Martini Co.
Design: Single Stone arch
Dimensions: Length of largest span: 42.0 ft.
Total length: 54.1 ft.
Deck width: 15.4 ft.
Recognition: Eligible for the National Register of Historic Places
Also called: Swartz Creek Bridge
Schwartz Creek Bridge
Approximate latitude, longitude: +38.65278, -122.47583 (decimal degrees)
38°39'10" N, 122°28'33" W (degrees°minutes'seconds")
Approximate UTM coordinates: 10/545609/4278376 (zone/easting/northing)
Elevation: 734 ft. above sea level
USGS topographic map: Aetna Springs, CA
Inventory numbers: CA 21C-46 (California bridge number)
BH 11187 (Bridgehunter.com ID)
Inspection (as of 11/2010): Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Poor (4 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 40.6 (out of 100)
Average daily traffic (as of 1978): 99