City of Portage â Asphalt multi-use trail maintenance to begin Tuesday By Will Kriss Jun 14, 2021 | 5:50 PM PORTAGE, MI (WKZO AM/FM) â Asphalt trail maintenance is scheduled to begin on Tuesday, June 15, according to an announcement from the City of Portage Monday. The two trails affected include the following: Schrier Park Trail (main asphalt walkway to wood chip trail), Shaver Road Multi-use Trail (Portage Industrial Cul-de-sac to South Westnedge Park baseball diamonds). The Multi-use Trails will be closed during the maintenance process and are expected to be open for full use by 8 a.m. on Thursday, June 17. Trail users are asked to seek an alternate route during the work time.