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San Antonio River Bridge


Nacimiento Ferguson Road Bridge

Photo taken by krkccountry in 2018

License: Creative Commons Attribution-Share-Alike (CC BY-SA)

View this photo at krkccountry.blogspot.com

BH Photo #484600


Central supports have been added at the mid-span of the trusses, thus transforming this bridge into a girder design.


Pratt through truss bridge over San Antonio River on Nacimiento Road
Monterey County, California
Open to traffic
Relocated here ca. 1940; rehabilitated 2008
(2)6-panel, pin-connected Pratt through truss
Length of largest span: 60.0 ft.
Total length: 255.9 ft.
Deck width: 16.7 ft.
Also called
Nacimiento-Ferguson Road Bridge
Approximate latitude, longitude
+35.98453, -121.23913   (decimal degrees)
35°59'04" N, 121°14'21" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/658741/3983666 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2015)
Inventory number
BH 78048 (Bridgehunter.com ID)
Inspection report (as of March 2017)
Overall condition: Good
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 87 (out of 100)
View more at BridgeReports.com

Update Log 

  • June 16, 2022: Updated by Nathan Holth: Removed construction date, added comment of likely relocation.
  • June 16, 2022: Updated by Paul Plassman: Added category "Decorative/Non-Functional Truss"
  • October 21, 2020: New photo from Geoff Hubbs
  • August 1, 2017: Added by Craig Philpott



San Antonio River Bridge
Posted June 17, 2022, by Paul Plassman

I agree. According to HA topographical maps, Nacimiento-Fergusson Road used to cross the San Antonio River about a mile to the southeast....maybe that was where the trusses were originally.

San Antonio River Bridge
Posted June 16, 2022, by Nathan Holth (webmaster [at] historicbridges [dot] org)


Absolutely, any short-medium span pin connected truss dated after 1920 is suspect, although Independent Bridge Company of Pittsburgh and Vincennes Bridge Company of Vincennes, Indiana did build pin-connected trusses into the 1920s (for reasons which elude me).

I removed the date and added mention of likely relocation.

San Antonio River Bridge
Posted June 16, 2022, by Paul Plassman

I doubt these pin-connected trusses are as new as 1940...Historic Aerials topographical maps don't show a crossing here prior to 1940, however, so I would bet the spans were relocated here.

Also, the 2008 NBI gives this span a build date of 1994...likely when the mid-span piers were added.

San Antonio River Bridge
Posted July 10, 2018, by Daniel

http://californiacaterhamclub.com/chat/showthread.php?1979-N... has a photo that I'm uploading that I believe is this bridge. It's on photobucket, so I don't trust it to stay visible there, hence the upload.