The Woodrow Wilson Bridge Project will detour a section of the Mount Vernon Trail in Old Town Alexandria over the next three weeks. The section of the trail that runs under the Woodrow Wilson Bridge will be closed until Oct. 15 for park construction and to place asphalt.

People on the trail will be detoured east to cross under the bridge and then west to rejoin the trail. There will be detour signs posted in the area.

The detour, originally scheduled to begin on Oct. 1, was moved to the beginning of this week.