As the state works to widen Butterfield Road from Naperville Road to Route 59, the Butterfield Road entrances to Herrick Lake Forest Preserve in Wheaton and Blackwell Forest Preserve in Warrenville will remain open, but the 0.7 mile segment of the Regional Trail on the south side of Butterfield that connects Herrick Lake with the Illinois Prairie Path Aurora Spur is clopsed. To bypass the closed trail, pedestrians and bicyclsits should follow Weisbrook Road noroth of Butterfield to the Illinois Prairie Path Aurora Spur and take the Aurora Spur southwest to the Butterfield underpass. The detour is about 1.7 miles. Equestrians are encouraged to avoid this area and use other county trails until construction ends in the fall of 2012.