NATIONAL PARK SERVICE · alerts
Reroute in Effect — Monticello Segment
February 19, 2026 · Source: National Park Service
The Stewart Tunnel is closed indefinitely pending reconstruction. The Ice Age Trail is closed at both intersections of Tunnel Rd. Follow Tunnel Rd to bypass the closure and remain on the designated alternate route. For maps and additional details from the Ice Age Trail Alliance, follow the link below:
Read the official NPS sourceWhat Travelers Need to Know
Check the affected roads, trails or facilities and the dates in the official notice. Plan an alternate route or activity if your itinerary uses the affected area.
This is an archived notice. Confirm its current status on the official conditions page before traveling.
Traveler guidance by State & Nation Staff Writer.