The Swift Creek Loop Trail, located inside Hemlock Bluffs, is closed while the boardwalk is being replaced.
The rest of the trails in Hemlock Bluffs will remain open. The trail that is closed is the approximately one-mile loop located to the right after you enter the nature preserve and go down many sets of stairs. There is no timeframe for when it will be completed.
You can keep an eye on the latest status of the trail by checking the official website here.