Pull into the Taggart Lake Trailhead parking lot this week and the lot itself looks normal, still full by mid-morning, still ringed by the same lodgepole and sage you remember from July. It's the trail sign at the first junction that's changed. Where the loop used to split toward Bradley Lake, there's now a rope line and a detour arrow pointing hikers south, onto a route that's longer, steeper, and about a mile further than the one most locals default to on a weeknight evening hike.
That reroute isn't isolated. If your regular circuit north of Jackson touches Taggart Lake, Cottonwood Creek, or the barns at Mormon Row, all three have been mid-construction for weeks. The overlap isn't a coincidence and it isn't random timing either. Nearly everything torn up right now shares a single reopening date. One closure doesn't, and it's the one most people assume will reopen right alongside the rest.
One project wearing two names
The trail closure at Taggart Lake and the shuttered picnic area at Cottonwood Creek aren't two separate headaches. They're the same construction program. The National Park Service's own project description covers both: the northern segment of Taggart Lake Trail, between the first junction and the Bradley Lake Trail, has been closed since May 1 for regrading and accessibility work, and Cottonwood Creek Picnic Area closed for construction in August as part of that same corridor effort.
What that means on the ground is straightforward. The full Taggart-Bradley loop isn't available this season. Both lakes are still reachable, just via the southern approach, a roughly 4.25-mile round trip instead of the shorter northern cut hikers are used to. The trailhead and its parking lot stay open the entire time. If your evening routine has been a quick lap to Taggart and back, plan on the longer version through mid-November, or swap it out for Heron Pond and Swan Lake Loop near Colter Bay, which the Grand Teton National Park Foundation specifically names as the season's stand-in for a Taggart Lake outing.
Mormon Row is in its last phase, not a new one
A few miles east, Mormon Row is going through something different: not a detour, but the final stage of a project that's been building since last year. Construction started in July, and according to Buckrail's reporting, it's expected to run through November. The historic district stays open the whole time, so you can still walk up to the Moulton barns, but expect equipment and noise near the buildings you're used to seeing empty at golden hour.
The changes here outlast this fall. A new parking lot is being built at the southeast corner of Antelope Flats Road and Mormon Row Road, replacing the two unpaved lots that currently hold just 14 vehicles between them. That relocation moves parking farther from the barns themselves, which means the approach on foot will look different even after the dust settles. The project also includes a 0.75-mile trail extension connecting Mormon Trail Road to Antelope Flats Road, new interpretive signage, and restrooms. Meanwhile, restoration on the Roy Chambers Homestead has been quietly moving along in the background: new siding on the main house and bunkhouse, framed interior walls, and drywall finished by the end of July. That piece isn't a construction inconvenience so much as a small piece of the district's history coming back online.
None of this fully wraps this year. The Grand Teton Association's new visitor building at the site isn't expected until 2027. What ends in November is this season's phase, not the whole initiative.
The shared calendar, laid out
Here's what's actually closed north of Jackson right now, and when each piece is scheduled to change:
| Location | Closed since | Reopens |
|---|---|---|
| Moose-Wilson Road (Moose to Rockefeller Preserve) | September 8, 2026 | November 15, 2026 |
| Taggart Lake Trail, north segment | May 1, 2026 | November 15, 2026 |
| Cottonwood Creek Picnic Area | August 2026 | No date announced |
| Death Canyon Road & Trailhead | May 2026 | June 2027 |
Three of those four rows land on the same day. That's not a marketing coincidence, it's a budget one. Superintendent Chip Jenkins has tied this season's work directly to the park's approach to its 2029 centennial, framing the disruption as investment rather than neglect. The math behind that investment tends to bunch projects into the same construction window, since crews, funding cycles, and the short mountain building season all favor doing as much as possible between May and mid-November.
The one that doesn't reset
Death Canyon is the exception, and it's worth sitting with because it's the piece most likely to catch a local off guard. While Moose-Wilson Road and the Taggart Lake reroute both wrap by November 15, Death Canyon Road and its trailhead have been closed since May 2026 and aren't expected back until June 2027, according to reporting that covered both closures together. That's not a few extra weeks. That's an entire additional hiking season this closure outlasts the others by.
The reason ties back to the roundabout going in near the Moose entrance. A temporary bypass for that project was expected to be paved by the end of September 2026, but the full roundabout, including road realignment and signal work, is anticipated to continue into June 2027, the same month Death Canyon is slated to reopen. If you've been telling yourself "just wait until things reopen in November," Death Canyon is the one place that sentence doesn't apply to. Anyone who reaches it by cutting north through Moose-Wilson or through the Laurance S. Rockefeller Preserve will still find it closed to vehicles, bicycles, and pedestrians alike well into next year.
Getting around it for now
With the Moose-Wilson corridor closed to vehicles and bikes and Death Canyon shut regardless, the practical alternative for north-south travel is Highway 26/89/191, the Outer Park Road, which runs open with no construction restrictions along the park's eastern edge from Jackson through Moose toward Moran, with pullouts and wildlife overlooks along the way. Wyoming Highway 22 fills in the east-west connection between Jackson, Wilson, and Teton Village. Together they form a workable loop around the closed segment, even if it adds a few extra minutes to a drive that used to run straight through.
For anyone whose weekly hike has depended on the Taggart Lake loop, the two realistic options are the longer southern approach to Taggart and Bradley lakes, or a swap to Heron Pond and Swan Lake Loop near Colter Bay, which stays open the entire season and offers its own lake views without the reroute.
What this actually settles
The headline fact isn't that construction is happening. It's that most of what's inconvenient right now shares an end date, and the one piece that doesn't is the one that requires the most planning. If Death Canyon is part of your regular rotation, this isn't a fall disruption to wait out. It's a closure that runs through next June, tied to a roundabout project on the same clock. Everything else on this list is scheduled to loosen up within the next seven weeks.
If you're the kind of person who tracks which trail reroutes to which picnic area closes with which road, you already know the value of someone local who follows the same calendar the park does. Mountain Group keeps an eye on these overlapping construction seasons north of Jackson the same way we keep an eye on listings, because the two corridors, the recreational one and the real estate one, tend to run right alongside each other.
