Rating:
3 votes

NWP - Black Point Bridge (1911)

Sonoma County, California, and Marin County, California

Photos 

Petaluma River RR bridge

Photo taken by Craig Philpott

Enlarge

BH Photo #177545

Map 

Street View 

Description 

Warren truss swing bridge with unusual truss configuration that looks to be a mix of Warren truss and Pratt truss diagonal elements.

Facts 

Overview
Warren through truss bridge over Petaluma River on Northwestern Pacific Railroad
Location
Sonoma County, California, and Marin County, California
Status
Open to low emission locomotives and cars carrying animal feed and lumber up north four to five times a week.
History
Built 1911
Railroads
- Northwestern Pacific Railroad (NWP)
- Sonoma-Marin Area Rail Transit (SMART)
- Southern Pacific Railroad (SP)
Design
Warren through truss swing bridge with extensive trestle approaches.
Dimensions
Length of largest span: 246.0 ft.
Total length: 1,440.0 ft.
Deck width: 18.0 ft.
Approximate latitude, longitude
+38.11240, -122.50074   (decimal degrees)
38°06'45" N, 122°30'03" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/543766/4218403 (zone/easting/northing)
Quadrangle map:
Novato
Elevation
11 ft. above sea level
Inventory number
BH 46170 (Bridgehunter.com ID)

Categories 

Beam (16,984)
Built 1911 (826)
Built during 1910s (10,027)
California (2,722)
Center Pivot Swing Span (86)
Have street view (29,309)
Marin County, California (52)
Movable (3,138)
Navigable waterway (2,212)
Northwestern Pacific Railroad (51)
Open (41,013)
Owned by railroad (13,597)
Petaluma River (6)
Preserved (1,231)
 Railroad (16,555)
Riveted (2,578)
Sonoma County, California (102)
Sonoma-Marin Area Rail Transit (7)
Southern Pacific Railroad (702)
Span length 175-250 feet (2,079)
Swing (1,577)
Through truss (17,339)
Timber stringer (4,359)
Total length 1000-2500 feet (2,006)
Truss (36,113)
Warren through truss (1,714)
Warren truss (7,058)

Update Log 

  • October 20, 2020: Updated by Luke: Added category "Sonoma-Marin Area Rail Transit"
  • September 4, 2020: New photos from Geoff Hubbs
  • April 11, 2018: New Street View added by Luke
  • October 21, 2016: Updated by Christopher Finigan: Added categories "Petaluma River", "Riveted"
  • August 22, 2013: New photo from Douglas Butler
  • September 21, 2012: New photo from Jann Mayer
  • November 15, 2011: New Street View added by Daniel Hopkins
  • November 14, 2011: Updated by Nathan Holth: Added Construction Date And Updated Status
  • September 13, 2010: Added by Craig Philpott

Related Bridges 

Sources 

  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Nathan Holth
  • News Article
  • Daniel Hopkins - chimera [at] clovermail [dot] net
  • Jann Mayer - jannmayer [at] gmail [dot] com
  • Douglas Butler
  • Luke
  • Geoff Hubbs
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Comments 

NWP - Black Point Bridge
Posted September 4, 2020, by Michael Dugger (michaeldugger [at] insightfulimagery [dot] com)

Difficult to access. Modern no trespassing sings. I respected the signs and flew in for photos from public areas nearby. A great looking bridge i would love to get on there and touch the metal and smell the railroad on there haha. I love theses old bridges.