The following link will take you to the Great Smoky Mountains National Park website page, where you'll find more details about trail advisories and closures.
There has been lots of water damage from winter and early spring rains, as well as the destruction brought on by hurricane Helene.
https://www.nps.gov/grsm/planyourvisit/temproadclose.htm
Balsam Mountain Trail
Hikers should use extra caution. No significant storm damage was found from Heintooga to Gunter Fork Trail junction. The trail has not been assessed from Gunter Fork to the Appalachian Trail. Gunter Fork Trail is closed.
Big Fork Ridge Trail
Foot logs are out at Caldwell and Cataloochee Valley Road junction. No other significant damage.
Boogerman Trail
Hiking on this trail is not advised due to a deep water crossing. The first foot log on this trail, which was 55 feet in length, was washed away. This water crossing is typically more than two feet deep even when water levels are low.
Caldwell Fork Trail
Trail closed to all users due to significant damage. Large sections of trail surface washed away; numerous rockslides and debris are obstructing the path; and multiple water crossings have become unsafe due to the loss of bridges.
Hemphill Bald Trail
Hikers should use extra caution. From Double Gap to Polls Gap there is no significant damage. From Double Gap to Caldwell junction there are two sections of trail impacted by landslides; one root ball has torn up the trail tread. Closed to equestrians.
Palmer Creek Trail
Second foot log is gone. No other significant damage.
Pretty Hollow Gap Trail
Hikers should use extra caution. Trail/road is washed out from Little Cataloochee trail junction to campsite #39. Closed to equestrians.
Rough Fork Trail
First and third foot logs are out, extensive trail erosion from the first creek crossing to the junction with Woody house. No significant damage from Woody house to junction with Caldwell Fork. Closed to equestrians.
Big Creek Area
Big Creek Trail
Trail only open for first two miles to hikers and equestrians. Trail is closed beyond the first two miles at Mouse Creek Falls due to significant trail damage. There is no access to campsites #36 and #37 from the Big Creek Trail. Parking only available near ranger station and walk to trailhead is approximately ¾ mile. Due to a bridge being out north of campsite #37, hikers traveling between Swallow Fork Trail and campsite #37 must cross Big Creek. Big Creek may be impassable during high water. Hikers should use extreme caution when fording (crossing) Big Creek and do so at their own risk.
Gunter Fork Trail
Trail closed to all users due to significant damage. Large sections of trail surface washed away; numerous rockslides and debris are obstructing the path; and multiple water crossings have become unsafe due to the loss of bridges.
Swallow Fork Trail
This trail is closed to all users due to significant damage.
Backcountry campsite closures and cautions due to Hurricane Helene damage
Backcountry campsites #41 and #42 are closed.
Backcountry campsites #39 and #40 are open, but closed to stock.