1 vote

Bow Ridge Aqueduct


Photo taken by Greg Hall


BH Photo #148772



Lost stone arch aqueduct over Conemaugh River on former Pennsylvania Main Line Canal
Indiana County, Pennsylvania, and Westmoreland County, Pennsylvania
Built 1827
Stone arch
Approximate latitude, longitude
+40.46270, -79.36750   (decimal degrees)
40°27'46" N, 79°22'03" W   (degrees°minutes'seconds")
Approximate UTM coordinates
17/638407/4480394 (zone/easting/northing)
Quadrangle map:
859 ft. above sea level
Inventory number
BH 43086 (Bridgehunter.com ID)

Update Log 

  • February 27, 2010: Updated by Greg Hall: Original Aqueduct sat in tow counties. Added Westmoreland
  • July 30, 2009: Added by Greg Hall


  • Greg Hall - cyclebay [at] aol [dot] com
  • Jacob P. Bernard


Bow Ridge Aqueduct
Posted August 28, 2009, by Tim Vechter (towhee at westol dot com)

The two standing bridge piers and "tunnel peeking out" are from 1864 when the Pennsylvania Railroad had constructed a new railroad tunnel. The two standing piers are not of the Canal Aqueduct. The submerged bases (footers) of the canal aqueduct supports can be seen in the river bed in low water, usually late summer and fall, located in the river bed between the 1864 piers and the 1907 stone arch bridge. No readily visible trace remains of the canal tunnel in either side of Bow Ridge.

Bow Ridge Aqueduct
Posted July 30, 2009, by Greg Hall (cyclebay [at] aol [dot] com)

Photo 1- signage might not be readable, so here it is. "This site is unique because of the presence of an aqueduct and a tunnel so close together. This unusual structure was required by the canal engineer, Alonzo Livermore, to move canal boats from one side of Bow Ridge to the other. Westbound boats emerged from a tunnel and immediately passed onto the aqueduct that spanned the Conemaugh River. The only remains of the aqueduct are the foundations of the piers (only 2 of 4) that once supported the aqueduct."

I had been advised a few years ago by a prak ranger that the span had been dismantled due to it deteriating and concerns of someone climbing on it and getting injured, though when it was dismantled, I did not ask.

Photo 2- Blueprint of the Pennsylvania Main line Canal System. I apologize of not readable. It shows the entire route, elevation changes, lock locations, rail relationship, docking system, and aqueducts/tunnels on system. It also indicated plans to extend the system to Cumberland, MD, but it was not. Indicates that operation dates were 1830-1864

Photo 3- remaining part of the canal approx 200 yds from aqueduct remains.

Photo 4- Looking North at the remaining span supports

Photo 5- Looking North/East at supports

Photo 6- Looking East

Webmaster's note: The photos that were here have been incorporated into the main site.