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Hacienda Bridge


River Road Bridge

Detail looking west

Photo taken by Craig Philpott in September 2009


BH Photo #146677

Street View 


Pratt Through truss bridge over Russian River on River Road
Hacienda, Sonoma County, California
Open to traffic
- American Bridge Co. of New York
Pratt Through truss main bridge with extended concrete post and beam approach on East end.
Length of largest span: 200.1 ft.
Total length: 530.9 ft.
Deck width: 25.3 ft.
Vertical clearance above deck: 19.2 ft.
Also called
River Road Bridge
Approximate latitude, longitude
+38.50889, -122.92694   (decimal degrees)
38°30'32" N, 122°55'37" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/506369/4262282 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2015)
Inventory numbers
CA 20C-37 (California bridge number)
BH 11631 (Bridgehunter.com ID)
Inspection report (as of October 2017)
Overall condition: Poor
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Poor (4 out of 9)
Sufficiency rating: 41.1 (out of 100)
View more at BridgeReports.com

Update Log 

  • August 5, 2021: New photo from Geoff Hubbs
  • April 15, 2021: New photo from Geoff Hubbs
  • June 11, 2016: Updated by Christopher Finigan: Added category "Pin-connected"
  • March 22, 2010: Updated by Craig Philpott: added street view
  • February 19, 2010: Updated by Craig Philpott: Corrected design
  • September 26, 2009: New photos from Craig Philpott



Hacienda Bridge
Posted September 16, 2021, by Luke

Thanks, Nathan.

Let's hope locals either accept the facts shown by the newspaper clipping, or, if it's wrong, PROVIDE ACTUAL EVIDENCE (Not hearsay. Not "my grampawpaw's third divorcee septuple removed sed X!" WE WANT ACTUAL EVIDENCE THAT DISPROVES THE NEWSPAPER ARTICLE LIKE J. JONAH JAMESON WANTS PICTURE OF SPIDERMAN.) to the contrary...

Hacienda Bridge
Posted September 16, 2021, by Nathan Holth (webmaster [at] historicbridges [dot] org)


Nice work I knew there was a story here with the 1947 approaches and the 1914 truss its good to get that all confirmed.

Hacienda Bridge
Posted September 16, 2021, by Geoff Hubbs (geoffrey [dot] hubbs [at] att [dot] net)

Luke - The history is still a bit confusing but I revised my edits and moved the postcard photo.

Hacienda Bridge
Posted September 15, 2021, by Luke

From a local history website that parrots the "it's a railroad bridge" claim, explains what likely is happening here.

Railroad truss WAS used as a one-lane road bridge for a decade.

In 1947 a 1914 ROAD bridge is relocated to Hacienda/Cosmo and, since it has the same date and design as the railroad bridge, the history gets blended until we get to here.

Hacienda Bridge
Posted September 15, 2021, by Luke

Geoff, just noticing this now, but the image you added is actually of the 1914 railroad truss, which is it's own entry:


I do not believe that this current bridge is a modified railroad truss, and the side view in https://bridgehunter.com/photos/49/54/495483-L.jpg is giving me more suspicion that it's not.

Prior suspicions include the fact that historic photos show a truss that matches https://bridgehunter.com/ca/shasta/bh51098/ and that Nathan's own photographs show a 1914 A-frame portal truss that shows no signs of being widened

River Road Bridge
Posted February 3, 2018, by H fox (Hfox [at] hardyfox [dot] com)

The bridge you call “River Road Bridge” is actually “Hacienda Bridge.” It is a county of Sonoma Historic bridge.