4 votes

Haupt Creek Bridge


Haupt Creek Stewart Point Road

Looking west

Photo taken by Craig Philpott in September 2009


BH Photo #146304


Street View 


Pinned Pratt through truss bridge over Haupt Creek on Stewart Point Skagg Springs Road
Sonoma County, California
Open to traffic
Built 1880, relocated 1909 to Monte Rio, relocated 1937 to this location
- Phoenix Bridge Co. of Phoenixville, Pennsylvania (Truss Fabricator)
- Rail-to-road
Pinned Pratt through truss with Phoenix columns
Length of largest span: 129.9 ft.
Total length: 133.9 ft.
Deck width: 13.1 ft.
Eligible for the National Register of Historic Places
Also called
Stewart Point Skagg Springs Road Bridge
Approximate latitude, longitude
+38.66083, -123.32194   (decimal degrees)
38°39'39" N, 123°19'19" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/471989/4279189 (zone/easting/northing)
Quadrangle map:
203 ft. above sea level
Inventory number
BH 43377 (Bridgehunter.com ID)
Inspection (as of 06/2015)
Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 68.0 (out of 100)
Average daily traffic (as of 2010)

Update Log 

  • September 30, 2015: Updated by Daniel Ketchum: Caltrans Historic Highway Bridges of California book (published 1990) lists a build date of 1880 on page 50.
  • September 22, 2015: Updated by Luke: Added categories "Relocated", "Rail-to-road", "Pin-connected"
  • June 5, 2011: New photo from Craig Philpott
  • March 22, 2010: Updated by Craig Philpott: refined design added street view
  • March 21, 2010: New photos from Craig Philpott
  • March 1, 2010: Updated by Craig Philpott: Amended design.
  • February 19, 2010: Updated by Craig Philpott: Corrected design
  • September 13, 2009: Added by Craig Philpott

Related Bridges 



Haupt Creek Bridge
Posted February 11, 2014, by John Charles Stutz (john [dot] c [dot] stutz [at] nasa [dot] gov)

The Geysers Road, the Haupt Creek bridge, and the pre-1984 South Fork Guauala River bridge, are all typical 1870's era railroad bridges. Cal Trans documents mention drawings initialled GH&SA RR, suggesting the Southern Pacific's Texas subsidiary, and these spans are typical of those installed by the SP during initial construction of the Sunset and Oregon routes.

The 1909 build date quoted for the Geysers span, is actually when these spans were recycled to the NWP RR's Russian River branch, and installed above Monte Rio as a 3-span crossing. In the same time frame, similar spans were re-erected on the former NPCRR at Tomalas Estuary and Papermill Creek, and the Guauala RR's crossing of the North Fork. The later span still stands on the circa 1910 steel cylindrical piers, but was raised clear of the flood plain circa 1940.