Park Project Page

A pathway running between a river and a stone cliff
A view of the towpath along the McMahons Mill project area

NPS Photo | Joe Reed, Park Engineer

Reconstruct/Stabilize Historic Stone Wall & Towpath McMahons Mill to Lock 42

The park plans to rehabilitate a historic stone retaining wall and stabilize the towpath along a 0.9-mile stretch between McMahons Mill (mile 88) and Lock 42 (mile 89) in Williamsport, Maryland. This section of the park is intermittently covered with water during river flooding, causing resource damage and requiring bicycle and pedestrian detours.

Once the project is complete, the towpath is less likely to experience as many high-water event closures, allowing for more frequent and safe passage for visitors. Learn more about the project on our Reconstruct/Stabilize Historic Stone Wall & Towpath McMahons Mill to Lock 42 project page.

 
A birds-eye view of a boardwalk pathway coming from the Paw Paw Tunnel.
An aerial view of the Paw Paw Tunnel boardwalk, following completion of the rock scaling portion of the project

NPS Photo

Paw Paw Tunnel Rock Scaling and Pinning Project

The Chesapeake and Ohio Canal National Historical Park (C&O Canal) is conducting a rock scaling project along the towpath at the northern or downstream portal of the Paw Paw Tunnel (Mile 155.2).

Go to our Paw Paw Tunnel Rock Scaling and Pinning Project page for more information on the project and its scope.
 
A red stone aqueduct spanning a creek with one failed arch and a bridge replacing it.
The pedestrian bridge spanning the Seneca Creek Aqueduct that is to be replaced as part of this project.

NPS | Joe Reed, Park Engineer

Replacement of Pedestrian Bridge at Seneca Creek Aqueduct

Complete!

Learn more about the project on our Replacement of Pedestrian Bridge at Seneca Creek Aqueduct project page.

 
Newly resurfaced towpath at the Monocacy Aqueduct (MM 42.2)
Newly resurfaced section of towpath at the Monocacy Aqueduct in Montgomery County.

NPS Photo

Towpath Resurfacing Project

Visitors will see towpath resurfacing taking place throughout the park over the course of five to ten years. These improvements will create a smoother, safer visit for the park's nearly 5 million annual visitors. For more information and current work areas, please visit our Towpath Resurfacing Project page.

Last updated: February 12, 2022

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Mailing Address:

142 W. Potomac St.
Williamsport , MD 21795

Phone:

301-739-4200

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