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 1975
- Design
- Stone arch
- Dimensions
-
Length of largest span: 59.1 ft.
Total length: 65.9 ft.
Deck width: 33.8 ft.
- 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)
- USGS topographic map
- Saint Helena
- Inventory numbers
- CA 21-16 (California bridge number)
BH 11214 (Bridgehunter.com ID) - Inspection (as of 04/2007)
- Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Good (7 out of 9)
Sufficiency rating: 61.5 (out of 100) - Average daily traffic (as of 1997)
- 15,000