4 votes

Iron Horse Trailhead - Santa Clara River Bridge


Northward View Across the Bridge

Possibly the Oldest Railroad Bridge in Los Angeles County



BH Photo #114272


Street View 


Camelback Parker through truss bridge over Santa Clara River on Iron Horse Trail
Santa Clarita, Los Angeles County, California
Open to pedestrians
Built in 1898 over the Colorado River; Relocated here 1928 after the Saint Francis Dam collapse washed away the previous bridge.
- Southern Pacific Railroad (SP)
- Ventura County Railway (VCRR)
Camelback Parker through truss
Span length: 200.0 ft.
Total length: 200.0 ft.
Also called
SP - Santa Clara River Bridge
"Lost Boys Bridge"
Approximate latitude, longitude
+34.42603, -118.57891   (decimal degrees)
34°25'34" N, 118°34'44" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/354916/3810525 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 36615 (Bridgehunter.com ID)

Update Log 

  • September 23, 2020: Updated by Fmiser: added "camelback"
  • April 8, 2019: Updated by Luke: Updated trail name & added alt name based on the bridge's appearance in the movie "Lost Boys"
  • June 12, 2016: Updated by Christopher Finigan: Added categories "Pin-connected", "Preserved"
  • August 14, 2013: Updated by Luke Harden: Added categories "Rail-to-trail", "Southern Pacific Railroad", "Railroad"
  • October 6, 2012: Updated by Jann Mayer: Added a few details (length)
  • February 18, 2010: Updated by Craig Philpott: Corrected GPS data
  • February 19, 2009: Updated by David Kimbrough
  • February 15, 2009: New photo from David Kimbrough
  • June 21, 2008: Updated by David Kimbrough
  • June 8, 2008: Updated by Max Johnson: Fixed "Name" "Status" and removed from a non-existant category
  • June 8, 2008: Updated by David Kimbrough
  • May 17, 2008: Updated by David Kimbrough
  • May 16, 2008: Added by David Kimbrough


  • David Kimbrough - kimbrough-photo [at] charter [dot] net
  • Craig Philpott - craigphilpott63 [at] gmail [dot] com
  • Jann Mayer - jannmayer [at] gmail [dot] com
  • Luke
  • Fmiser - fmiser [at] gmail [dot] com


Iron Horse Trailhead - Santa Clara River Bridge
Posted September 23, 2020, by Fmiser (fmiser [at] gmail [dot] com)

I was just watching some fun Mark Rober videos on YouTube and one of them is on the science of successful egg drop competition. And he was dropping his eggs from an 1898 Parker truss, pin connected, railroad now trail bridge!!

I tracked it down to this bridge. There are some nice shots of the bridge in the video. Here's the link if anyone else cares.


Iron Horse Trailhead - Santa Clara River Bridge
Posted April 13, 2019, by John Marvig (marvigj27 [at] gmail [dot] com)

Nice work! Looking forward to more on this bridge!

Iron Horse Trailhead - Santa Clara River Bridge
Posted April 13, 2019, by Luke

Excellent news, Robert. Looking forward to it.

Iron Horse Trailhead - Santa Clara River Bridge
Posted April 13, 2019, by Robert Schwemmer (Robert [dot] Schwemmer [at] gmail [dot] com)

I just measured the span, 198 feet. I believe I have identified the builder and its original location on the Colorado River. More to come

South Fork Trail - Santa Clara River Bridge
Posted April 8, 2019, by Robert Schwemmer (robert [dot] schwemmer [at] gmail [dot] com)

Recent video of the bridge


SP - Santa Clara River Bridge
Posted November 18, 2014, by Rod (bigbadtrucker [at] pacbell [dot] net)

I have found in research that this bridge originally was built over the Colorado River and was moved to this location in 1928 to replace the washed out bridge.

SP - Santa Clara River Bridge
Posted November 16, 2014, by Rod (bigbadtrucker [at] pacbell [dot] net)

Here is a link to a photo of the bridge after the Saint Francis dam collapse. http://hdl.huntington.org/cdm/ref/collection/p16003coll2/id/...

SP - Santa Clara River Bridge
Posted November 16, 2014, by Rod (bigbadtrucker [at] pacbell [dot] net)

The 1898 bridge was installed over the Santa Clara River in 1928 after the Saint Francis Dam collapse, the original bridge at this location was a wood truss bridge that was completely washed out by the flood of water from the dam, I do not know where this bridge was before this.

Santa Clara River Railroad Bridge
Posted August 14, 2013, by DeserTBoB (desertbob426 [at] yahoo [dot] com)

Wrong description. This was the SPRR main line from its opening in 1896 until the opening of the Montalvo Cutoff in 1904, at which time the Montalvo/Santa Paula/Fillmore/Piru/Newhall segment became a secondary main. It served the ag industry in the Santa Clara Valley until the '80, when SP started running off ag customers in droves. It was used up as a bypass until the wooden trestle adjoining this through truss washed out in the flood of '76, after which this bridge, the large wooden trestle near the trailer park and various small trestles and other 1890s through trusses were abandoned to Piru in 1986, and the track was used for storage of obsolete 40' boxcars which were eventually dumped into the Great Salt Lake to protect the 1959 causeway from rising lake levels. There are other bridges on this line, some still in service, that are the same age. Heavy freights (and Amtrak) used the line in the '70s before the washout as a bypass during the rehabilitation of the Santa Susana Tunnel, the most traffic the line had ever seen. I was on one of those bypasses, and between the 3% grade up from Piru eastboard, the creaking and groaning bridges (like this one) and the rickety 90 lb. rail, it was white knuckles all the way. This line was never THE Coast Line main for more than four years; the Santa Paula Line was finally completed in 1900, while the Montalvo Cutoff was built a scant four years later. Also, this bridge is still in service; it carries major water mains into the Santa Clarita Valley.