Highway 119 from its intersection with Highway 144 on Fort Stewart to the post's north boundary will be closed for about an hour Thursday afternoon.
Soldiers with the 92nd Engineer Battalion are planning to demolish an old range tower with explosives.
The stretch of road from just north of the post's cantonment area to just south of Pembroke will be closed from about 1 to 2 p.m., officials said.
If you have to travel that route Thursday afternoon, plan going around post.