
You can now create your own itineraries to guide your C&O Canal exploration, or you can copy one of ours! Learn more about Itineraries.
The Conococheague Aqueduct is a watered and fully operational aqueduct in Williamsport. It has three 60 -foot arches and is 196 feet long, making it the second longest aqueduct on the canal, behind the Monocacy Aqueduct. It began operation in 1835 and ended in 1924 when flooding damaged the aqueduct, along with other parts of the canal. Soon after, the Chesapeake & Ohio Canal Company closed the canal to boat traffic.
Restoration work on the aqueduct began in 2017 and was completed in 2019. The project involved strengthening the piers and supports, repairing the masonry, installing a period appropriate wall and iron railing, and making the aqueduct water-tight. Now visitors can take a free one hour interpretive boat ride led by the Park Service.
In 1861, Union troops destroyed the Conococheague Aqueduct to prevent Confederates from escaping through Williamsport after the battle of Antietam. Luckily, the solid construction of the canal works emerged intact. In 1863, Confederate soldiers damaged the aqueduct in an attempt to stop the Union’s transportation of coal, but it was repaired four days later. The berm wall collapsed several more times, though the most famous incident was when Frank Myers’ Boat No. 73 fell through the wall of the aqueduct into the Conococheague Creek. Instead of repairing it, the Canal Company rebuilt it with wood.
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Please visit the National Park Service website for the following information:
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There has been a lapse in appropriations, and a shutdown of the federal government is currently in effect. Much of the C&O Canal National Historical Park remains accessible to the public, however, the National Park Service is not able to operate as normal. Scheduled C&O Canal Trust events and Canal Quarters reservations will continue as scheduled.
Learn more about what the shutdown means for the C&O Canal National Historical Park.