** Highway 7/8 reopened just after 9:30 p.m. **
OPP reporting Highway 7/8 is fully closed through New Hamburg.
Both eastbound and westbound lanes are shut down between Haysville and Nafziger following a serious two-vehicle crash at Hamilton Road.
Sgt. Kerry Schmidt says one driver was taken to hospital with critical injuries.
There's no current reopening time known, and traffic is jammed in the area.
*401 callers to 570 NEWS say northbound lanes on Hamilton Road are also blocked approaching Highway 7/8.
Follow 570 NEWS on Twitter @570NEWS and @570traffic for the latest updates.
UPDATE ROAD CLOSURE: #Hwy7 between Haysville Rd and Nafziger Rd #NewHamburg - Hwy CLOSED due to a collision. Reopening time unknown ^jp pic.twitter.com/3TKol23L08— OPP GTA Traffic (@OPP_GTATraffic) December 17, 2018
Serious collision #Hwy7 at Hamilton St - New Hamburg1 person with critical injuries https://t.co/5j3YV6GPoJ— Sgt Kerry Schmidt (@OPP_HSD) December 17, 2018