5 votes

Delaware Aqueduct


Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #128455


Street View 


Suspension bridge over Delaware River on the former Delaware & Hudson Canal
Pike County, Pennsylvania, and Sullivan County, New York
Open to one-lane traffic
Built 1848 by John A. Roebling to carry the Delaware & Hudson Canal; later converted for highway traffic; rehabilitated 1985
- John A. Roebling
- Russel F. Lord
Wire suspension
Length of largest span: 141.1 ft.
Total length: 535.1 ft.
Deck width: 11.5 ft.
Posted to the National Register of Historic Places
Approximate latitude, longitude
+41.48263, -74.98450   (decimal degrees)
41°28'57" N, 74°59'04" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/501293/4592336 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2008)
Inventory number
BH 38205 (Bridgehunter.com ID)
Inspection report (as of June 2016)
Overall condition: Fair
Superstructure condition rating: Good (7 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 45.2 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 2, 2018: New photo from Josh Schmid
  • April 21, 2016: New photo from Art Suckewer
  • August 23, 2014: New photos from Patrick S. O'Donnell
  • March 7, 2014: Photos imported by Dave King
  • June 27, 2013: New Street View added by Dave King
  • August 6, 2010: New photos from Jodi Christman
  • November 23, 2008: Added by James Baughn


  • HAER PA-1 - Delaware & Hudson Canal, Delaware Aqueduct, Spanning Delaware River, Lackawaxen, Pike County, PA
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • Jodi Christman - masterofchaos [at] outlook [dot] com
  • Dave King - DKinghawkfan [at] hotmail [dot] com
  • Patrick S. O'Donnell - 1 [dot] 991km [at] comcast [dot] net
  • Historical 1850s Article Mentioning Bridge
  • Josh Schmid - schmij5 [at] rpi [dot] edu


Delaware Aqueduct
Posted November 15, 2014, by Donald Sayenga (Dsayenga [at] gmail [dot] com)

Perhaps the idea of a new category is valid - it would be a very small category. Russel Lord hired Roebling to use the same type structure that he had proven successful at Pittsburgh. It was a self-supported wooden truss bridge. It was augmented with two large wire cables for support of the water when it was filled in canal season. When it was drained the cables carried no load and served no purpose. Roebling built a total of five such structures. This is the only survivor - rehabilitated several times. We could call it a "part-time" suspension bridge.

Delaware Aqueduct
Posted December 20, 2013, by Nathan Holth (form3 [at] historicbridges [dot] org)

The bridge was indeed originally a Roebling built bridge/aqueduct. For years in more recent history the aqueduct part was removed. More recently, the wooden aqueduct structure was replicated on the bridge. However, it remains open to pedestrians. If you look at the elevation views you can see a main cable with suspenders leading down to floor beams. The concrete you see appears to be a deck.

Delaware Aqueduct
Posted December 20, 2013, by Luke Harden (lukemh9 [at] gmail [dot] com)

Sure looks like a suspension to me in this pre-restoration photograph...

Delaware Aqueduct
Posted December 20, 2013, by Don Sayenga (Dsayenga [at] gmail [dot] com)

Perhaps a new category is needed for this one, but I wouldn't know what to call it. It wasn't a suspension bridge when it was built and it isn't a suspension bridge now. The latest photo is excellent. It clearly shows the prestressed concrete deck inside the aqueduct replica.

Delaware Aqueduct
Posted April 19, 2010, by Don Sayenga (Dsayenga [at] gmail [dot] com)

Minor corrections:

Only half the bridge is in Pike County, Pennsylvania. The eastern half is in Sullivan County, New York.

Only half the bridge was designed and built by John A, Roebling. The abutments and the piers were designed and built by Russel F. Lord.