Facts
- Overview
- Stone arch bridge over Swartz Creek on Aetna Springs Road
- Location
- Napa County, California
- Status
- Open to traffic
- History
- Built 1912
- Design
- 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
- 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)
- USGS topographic map
- Aetna Springs
- Inventory numbers
- CA 21C-46 (California bridge number)
BH 11187 (Bridgehunter.com ID) - Inspection (as of 03/2007)
- 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