NC builds a land bridge
North Carolina is building its first land bridge over NC‑143 in the Stecoah Gap corridor to help bears, other wildlife, and Appalachian Trail hikers cross safely — a targeted fix at a known pinch point. (wpde.com) For thru‑hikers and local trail users, that means fewer dangerous road crossings and better wildlife connectivity in a hotspot corridor. (wpde.com)
At Stecoah Gap in western North Carolina, the Appalachian Trail drops out of the woods and meets a mountain road. For years, that crossing has been exactly what it sounds like: hikers stepping onto NC-143 and waiting for a break in traffic, while black bears, deer, and anything else moving along the ridge faced the same hard stop. Now the state is building something North Carolina has never had before there—a land bridge, covered with soil and plants, that will carry both wildlife and hikers over the highway instead of through it. (wlos.com, ncdot.gov) The bridge is part of Corridor K, a long-running highway project through Graham County that has been discussed, delayed, and redesigned for decades. NCDOT says construction is underway on a 12-mile stretch between Robbinsville and Stecoah, where US-129, NC-143, and NC-28 are being widened and reshaped with broader shoulders, passing lanes, and climbing lanes. The agency broke ground on this section in October 2022, and the whole project now carries an estimated price tag of about $681 million. (ncdot.gov, bpr.org) That road work created a very specific problem at Stecoah Gap. The Appalachian Trail crosses NC-143 there inside the Nantahala National Forest, at a place where a footpath, a wildlife corridor, and a mountain highway all squeeze through the same notch. NCDOT’s plan is to shift the trail onto the new overpass so hikers no longer have to cross traffic at grade. The Appalachian Trail Conservancy has warned hikers since 2023 to expect delays and temporary detours at the site while that change is built. (appalachiantrail.org, ncdot.gov, fs.usda.gov) A land bridge works by making the road disappear, at least from the animal’s point of view. Instead of a bare concrete span, the structure is topped with dirt and landscaping so it feels like continuous ground. WLOS reported this week that the finished bridge will separate movement into two side-by-side passages, one for wildlife and one for hikers, while fencing along the highway steers animals toward the crossing instead of letting them wander onto the pavement. (wlos.com) The state chose this spot because it is more than scenic. In a 2023 federal grant document, NCDOT described NC-143 at Stecoah Gap as a narrow mountain road with sharp curves, steep grades, fog, rain, and a history of crashes. The same document calls the southern Appalachians an “Appalachian migratory superhighway,” a route where animals move along connected mountain habitat and, increasingly, shift elevation as the climate changes. A bridge at the gap does not just protect a few bears at one road crossing; it keeps a ridgeline connected that the highway would otherwise slice in two. (connect.ncdot.gov, smokiessafepassage.org) That is what makes this little patch of engineered hillside so unusual. Corridor K is a road-building project, meant to move cars and freight through a hard piece of mountain country. At Stecoah Gap, the most novel piece of it is a place where the road yields instead: a mound of planted earth over asphalt, where a thru-hiker headed to Maine and a black bear headed down the ridge can pass above the traffic without ever touching it. (ncdot.gov, wlos.com)
