Seth from Rockville, MD on 5/15/2017 3:08:22 PM:
From the following website: https://www.nps.gov/choh/learn/news/co-canal-towpath-closure-paw-paw-tunnel.htm
The date for limited access in the Paw Paw Tunnel and the downstream boardwalk is now expected to begin on or around beginning of June, 2017.