Rating:
3 votes

Old Salmon Falls Bridge

Photos 

Salmon Falls Bridge

Photo taken from the west side facing east on 1/1/14.

Photo taken by Mark Noyes

Enlarge

BH Photo #272365

Map 

Description 

This bridge serviced the gold mining town of Salmon Falls. The site (Salmon Falls) is California Registered Historical Landmark #571.This bridge is usually submerged under the Folsom Reservoir. On extremely rare occasions, when the reservoir is low enough, the bridge is accessible for foot traffic.

Facts 

Overview
Abandoned concrete rigid frame bridge over South Fork American River on Old Salmon Falls Road
Location
El Dorado County, California
Status
Inundated
History
Built 1925, Submerged 1955-6
Design
Concrete
Also called
Hidden Bridge
Approximate latitude, longitude
+38.76049, -121.06060   (decimal degrees)
38°45'38" N, 121°03'38" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/668507/4291984 (zone/easting/northing)
Quadrangle map:
Pilot Hill
Elevation
354 ft. above sea level
Inventory number
BH 59142 (Bridgehunter.com ID)

Update Log 

  • February 27, 2015: Updated by Luke: Edited build date per forum comment
  • January 4, 2014: Updated by Luke Harden: Chnaged status to "Indunated"
  • January 4, 2014: Added by Mark Noyes

Sources 

Comments 

Old Salmon Falls Bridge
Posted December 29, 2018, by Daniel

if we're talking submerged bridges in Northern California, there's one in Nicasio Reservoir (Marin County) and one in Lexington Reservoir (Santa Clara County). I haven't had the balls to go out to them when visible though - don't want to deal with the mud (not sure how deep it is)

Nicasio Reservoir has a fair amount of old road visible on google maps too - old Point Reyes-Petaluma (south of the current road, starting near the intersection), and old Nicasio Valley Road (west of the current road, at the south end of where it gets close)

Old Salmon Falls Bridge
Posted December 29, 2018, by Melissa Brand-Welch (melissabrandwelch [at] msn [dot] com)

I would Love to walk across this bridge!

Old Salmon Falls Bridge
Posted December 29, 2018, by Don Morrison

Cool. It's visible in 10/2009 Google Earth imagery.

It appears that the Hancock Creek bridge is also visible in 10/2009 at about 38.7578, -121.0745

Old Salmon Falls Bridge
Posted December 28, 2018, by Dana and Kay Klein

Got it. COOL!

Salmon Falls Bridge
Posted February 27, 2015, by Anonymous

The concrete bridge was constructed by El Dorado County in 1925. Mountain Democrat (Placerville, Calif) published articles about the need for a permanent bridge and the progress of construction.

There were two separate parts. The shorter portion was destroyed (Folsom Telegraph Jan 17, 1957)

The bridge was first covered by the waters of Folsom the winter of 1955-56.

Salmon Falls Bridge
Posted February 27, 2015, by r lee

The concrete bridge was constructed by El Dorado County in 1925. Mountain Democrat (Placerville, Calif) published articles about the need for a permanent bridge and the progress of construction.

There were two separate parts. The shorter portion was destroyed (Folsom Telegraph Jan 17, 1957)

The bridge was first covered by the waters of Folsom the winter of 1955-56.

Salmon Falls Bridge
Posted January 27, 2014, by Nathan Holth (form3 [at] historicbridges [dot] org)

Bridge appears to be a multiple span concrete thru girder. This bridge type was common ca. 1918, so I would agree that date is a likely suspect.

Salmon Falls Bridge
Posted January 27, 2014, by Luke Harden (lukemh9 [at] gmail [dot] com)

I tried when this entry was originally made, but I couldn't find anything on the bridge.

The adjacent pier for a long-gone footbridge was built in 1918, so 1918 could be a likely build date for this bridge.

Salmon Falls Bridge
Posted January 27, 2014, by Clark Vance (cvance [at] dogmail [dot] com)

I'm wondering if this isn't later than the 1880s date. I don't associate this type of reinforced concrete with that era.

Is the any additional history on the designer and construction techniques?

Salmon Falls Bridge
Posted January 26, 2014, by Craig Philpott (cphilpott [at] puc [dot] edu)

There are other submerged bridges in California likely to see the light in the coming summer of low water levels.