2 votes

Quarry Road Bridge


View from Above

The bridge can be seen right in the center of the San Gabriel River bed. The pink arrow shows what might have been a road that could have linked to the bridge.

Google Earth

BH Photo #127577



Abandoned steel tee beam bridge over San Gabriel River on a Quarry Road in Duarte
Duarte, Los Angeles County, California
The bridge consists of a single span in the middle of the San Gabriel River. There is no existing evidence of other spans or abutments on either side. There is no evidence of structural damage to any part of the existing span. The ends do not appear to have been torn away or even cut off. There does appear to be the remainents of a road on the east bank that lines up with the bridge but it is not clear how they might have been connected.
Approximate latitude, longitude
+34.14942, -117.92742   (decimal degrees)
34°08'58" N, 117°55'39" W   (degrees°minutes'seconds")
Approximate UTM coordinates
11/414503/3779112 (zone/easting/northing)
Quadrangle map:
645 ft. above sea level
Inventory number
BH 38092 (Bridgehunter.com ID)

Update Log 

  • March 20, 2015: Updated by Luke: Name change based on forum comment
  • January 4, 2011: Updated by David Kimbrough: corrected Long & Lat
  • April 25, 2009: Updated by Curtis Lee
  • November 15, 2008: Updated by David Kimbrough
  • November 14, 2008: Added by David Kimbrough


  • David Kimbrough - kimbrough-photo [at] charter [dot] net
  • Curtis Lee - clee47ford [at] yahoo [dot] com
  • Luke


Quarry Road Bridge
Posted March 20, 2015, by Don Morrison

Thanks for the information correcting my guess.

I see that Luke has added a couple bridges in the region where Follow's Camp was, on the East Fork. I see an existing bridge a short distance downriver from where Luke placed the pins. That bridge is not listed yet. Any info on that?

Follows Camp Bridge
Posted March 20, 2015, by Bobby Duncan (Bobduncan [at] yahoo [dot] com)

This is not the Follows Camp bridge or the Bridge to Nowhere. Both of those bridges are several miles upstream in the San Gabriel Canyon. This is an unnamed bridge that was used for gravel trucks hauling between the Azusa Rock quarry in Fish Canyon and the Vulcan gravel pit on the other side of the river.

Nowhere Bridge over (some of) the San Gabriel River
Posted January 6, 2013, by Kurt Pedersen (kurt [dot] pedersen [at] yahoo [dot] com)

The bridge does not show up until the 2003 photo on Historicaerials.com. It appears to be related to the mining operations in Fish Canyon.

Nowhere Bridge over (some of) the San Gabriel River
Posted May 4, 2011, by John Slayton (juanslayton [at] dslextreme [dot] com)

I am nonplussed that I have been riding past this bridge for years as I commute to work on the bike trail, and I never noticed it. Perhaps I can make a shameless conjecture. In 1928 excavation began for construction of a huge dam on the San Gabriel River at what is known as the 'Forks' site. Temporary housing for several hundred workers was built, as was a rail line. This dam was, of course, never completed; after the collapse of the St Francis dam, geologists inspected the site and discovered it would not be safe. Instead, the present San Gabriel dam was built downstream. Which leaves me with the question: What became of the rail line? Did it connect with any of the SGV lines; if so, where? And is there any chance this bridge could be a remnant of it?

Nowhere Bridge over (some of) the San Gabriel River
Posted January 4, 2011, by David Backlin (us71 [at] cox [dot] net)

Looking at ACME Mapper, it appears to be on an abandoned alignment of Todd Ave.

Nowhere Bridge over (some of) the San Gabriel River
Posted November 28, 2009, by Digic

Try these co-ordinates for Google Map: 34.149451,-117.927407