City of Lockport issued the following announcement on June 14.
The following streets are currently closed through Sunday, June 17:
8th St. from Hamilton St. to the library lot
10th St. from Commerce St. to Hamilton St.
Hamilton St. from 10th to 9th Streets
Hamilton St. from 9th to 8th Streets
Starting Friday, June 15 through Sunday, June 17:
Hamilton St. from 7th to 8th (no parking, no through traffic)
Starting Saturday, June 16 through Sunday, June 17:
8th St. from State St. to the library lot
State St. from 9th to 6th Streets
Parade-only closures (Friday, June 15) beginning at 5:30 p.m. through the conclusion of the parade.
State St. from 9th to 14th Streets (local traffic only)
State St. from 14th to Division St. (closed)
Division St. from State St. to Canal Rd. (closed)
Canal Rd. from Division to 8th St. (closed)
10th St. from Canal Rd. to Daviess St. (closed)
Daviess St. from 10th to 8th Streets (closed)
8th St. from Daviess St. to Canal St. (closed)
Clinton St. from 8th to 5th Streets (closed)
5th St. from Clinton St. to Canal St. (closed)
Canal Rd. from 5th to 2nd St. (closed)
2nd St. from State to Canal St. (closed)
Original source can be found here.