Trail Alerts

JUN 19 2018 | GAP reopened at Mile Marker 123-124; Landslides Cleared

The entire Great Allegheny Passage is fully open. Please use caution in the sections that are still wet and muddy.  We're pleased to announce that the mudslides in Elizabeth Township (between mile markers 123 and 124) and in Fayette County (between mile markers 96 and 97) have been significantly cleared, thanks to quick work by the Yough River Trail Council, Mon/Yough Trail Council, and Whitsett-Fayette Yough Trail Council, volunteer trail partners along the Great Allegheny Passage.

MAY 31 2018 | C&O Alerts & Closures - several major washouts

ALERT - TOWPATH CLOSURES: Towpath at C&O miles 52.5 and 64.2 are completely washed out, with no easy detour.  The towpath sustained considerable damage due to recent flooding. These portions of the path are closed:

•  Between Catoctin Aqueduct and the Brunswick Family Campground (Mile Marker 51 - 54) Due to bridge failure Through hikers and bikers (west bound) should exit Lander Lock (MM 50.9) or Brunswick (east bound) (MM 55). We don’t advise the road detour for inexperienced road cyclists.

• Update on washout near Harpers Ferry Area between Weverton and Huckleberry Hill Hiker Biker Campsite (Mile Marker 58 - 62.9): Temporary bridge in place at C&O mile 64.2 - Thank you NPS!

Please check the C&O's website for up to date details.      The park’s Facebook page,, is the best place to check current conditions.

APR 5 2018 | Big Savage Tunnel is Open!

Volunteers from the Somerset County Rails-to-Trails Association and staff from Somerset County opened the Big Savage Tunnel today for your traveling pleasure.  It's cold and windy but sunny on Big Savage Mountain.

APR 2 2018 | Take Caution -- Standing Water on GAP Near Eagle Viewing Area

Please take caution when riding between Sandcastle and the Hot Metal Bridge.  Standing water is gathering on the trail near the viewpoint for the Hays eagles.  Trail groups and nearby landowners are trying to address the issue and apply a long-term solution.

AUG 10 2017 | Paw Paw Tunnel (mm 155.2-155.8) closure extended

Paw Paw Tunnel closed as of today June 2, 2017:

Update: Paw Paw Tunnel is closed as of June 2, 2017. The closure is extended until September 2018.

C&O Canal National Historical Park has closed Paw Paw Tunnel as part of the planned rock scaling project. The park anticipates that the tunnel will remain closed and hopefully re-opening around the end of September.

To provide thru-access for bicyclists during the project, a bypass trail will be available using an old logging road on the berm side of the canal upstream of the tunnel. A temporary “bridge” across the canal prism connects with an abandoned logging road that provides a gentler grade to the top of Tunnel Hill. This temporary by-pass then connects with the existing Tunnel Hill Trail.

Rock scaling is the physical removal of loose rock and unstable surface materials that pose a hazard. The project will enhance visitor safety by reducing the risk of injury from falling rocks.

For more information check the official C&O Canal NHP website.

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AUG 10 2017 | Detour for Conococheague Aqueduct (mm 99.8) project to start this week

UPDATE: The detour won't start until Thursday, Aug. 17, said Joe Reed, civil engineer for the C&O Canal.

Dave McMillion Aug 7, 2017

Starting late Tuesday or early Wednesday, a section of the C&O Canal near Williamsport is expected to be closed for more than a year to allow for an estimated $9 million project that federal officials say will transform the canal visitor experience in the area of Cushwa Basin.

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At the project kickoff event May 5, 2017, Members of Allegheny Trail Alliance, Doug Riegner (red) Bryan Perry (blue) stand next to National park service and C&O Canal Don Briggs, Superintendent (far right), Michael Reynolds, Acting Director of National Park Service (far left).

Read Full article HERE...

JUN 30 2017 | Conococheague Aqueduct Restoration Construction & Detour (mm 99.7)

By Linzy French

 Assistant to the Superintendent, C&O Canal National Historical Park

Williamsport, MD – The National Park Service (NPS), Chesapeake and Ohio Canal National Historical Park (C&O Canal) awarded an $8,997,112 contract for the restoration of the Conococheague Aqueduct to Corman Construction, Inc. of Annapolis Junction, MD on June 5, 2017. The next phase of the restoration project for the entire Williamsport interpretive complex will return the Conococheague Aqueduct to its 1920s appearance and create the first watered, operational aqueduct along the C&O Canal since 1924. During construction, visitors will be directed to follow a detour route around the Conococheague Aqueduct located near Williamsport, Maryland between milepost 99.75 - 99.60.

20170620 Conococheague Bypass Plan   

Construction is anticipated to begin in late July 2017 and extend approximately 18 months, weather dependent, until December 2018. During this time visitors will be unable to travel over the aqueduct and through the construction area and will be directed onto a 1.1 mile long detour route around the Conococheague Aqueduct. The upstream end of the detour departs from the towpath near milepost 99.75, travels along Fenton Avenue, an alleyway, state Route 68, and U.S. Route 11 until rejoining the towpath near milepost 99.60 (directly adjacent to the Cushwa Basin). Prior to closure of the towpath, signage will be posted to clearly mark the detour route.

Fenton Ave  Redland Brick Alleyway Bypass Route Details  Screen Shot 2017 06 30 At 4.54.53 Pm

The Conococheague Aqueduct is one of eleven aqueducts on the 184.5 miles of the C&O Canal and is listed on the National Register of Historic Places. Over 97 years ago, in April of 1920, the upstream wall of the Conococheague Aqueduct gave way, crumbling into the creek below. The C&O Canal Company temporarily repaired the aqueduct with a wooden wall, but the canal only operated for three more seasons before being closed in the spring of 1924.

The project will restore the aqueduct to its appearance in the early 1920s, with a new upstream wall designed to appear as the wooden temporary replacement wall. More importantly, the aqueduct will be restored to the condition where it can once again hold water, the first C&O Canal aqueduct to be restored to full operation. When complete, Williamsport, Maryland will be the only place in North America where visitors can ride boats across an aqueduct and through a working canal lock.

For more information about the project and the park, call 301-582-0813 or please visit Follow us on Facebook at chesapeakeandohiocanal and on Twitter @COcanalNPS

MAY 10 2017 | Repairs Close Olmsted Island Bridge and Overlook mile 14.1 on C&O Canal

by Pete Peterson 

Potomac, MD- The Chesapeake & Ohio Canal National Historical Park (C&O Canal) will temporarily close the Olmsted Island Trail and Great Falls Overlook on or about March 1, 2017 for repairs that will improve visitor safety and better protect park resources. Construction on the bridges is anticipated to last 90-120 days with completion and re-opening in late June 2017. Completion of construction may be impacted by weather conditions.

Read the official postingFor more information on the project and Great Falls, please visit their website HERE

 Great Falls Map   Olm2

Great Falls overlook 3: photo by Dave Adams

NOV 1 2016 | Ohiopyle State Park (GAP mile 63)

Updates and photos of the new Visitors Center are available on ‘Ohiopyle State Park’ Facebook page.

Additional Ohiopyle State Park information can be found on the PA-DCNR website.

NOV 1 2016 | Montour Trail (City of Pittsburgh to the Airport)

For complete details on all construction notices for the Montour Trail please Visit the Website

NOV 1 2016 | Three Rivers Heritage Section (GAP mile 139)

PITTSBURGH, PA: *To get answers to specific questions concerning the Three Rivers Heritage Trail detours, please join one of their Social Network sites: Visit the Website.

NOV 1 2016 | Brush (GAP mile 6) & Borden Tunnels (GAP mile 17.5), MD

The Brush Tunnel (GAP mile 6)  is lighted. 

The Borden Tunnel (GAP mile 17.5) is NOT lighted - For your safety, PLEASE DISMOUNT & WALK through this tunnel.

SEP 20 2015 | Pinkerton Tunnel (GAP mile 52)

Pinkerton Tunnel - ridersPinkerton Tunnel is now open!

You still have the option to take a 1.5 mile detour around the restored Pinkerton tunnel, near mile 52 in Somerset County. Besides shortening the distance, fixing the tunnel has create another spectacular feature along the trail. Located between the Pinkerton Low and High Bridges, the "bridge-tunnel-bridge" in quick succession is a marvel. It's also make a great way to create a loop ride, using the tunnel and the detour trail. Thanks to all of the donors and supporters who made it happen! 

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The Great Allegheny Passage ® (GAP) rail-trail offers 150 miles of hiking and biking from Cumberland MD to Pittsburgh,PA.


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