The lanes were closed for almost two days after chemical spill
On Wednesday, a transport truck leaked acid on the road, forcing the closure of all lanes on the highway between Glendale and Westchester.
The southbound lanes re-opened early yesterday morning.
OPP Sgt. Kerry Schmidt says it took a while for cleanup crews to remove the acid after it seeped into the ground below the concrete barriers on the side of the road.

Mayor Gives Update of City Affairs
NRP Plans to Expand Through Niagara
St. Catharines HART Hub Opens
Budget Supports Home Buying, Small Business
Niagara EMS Workers Vote to Strike
Thorold Votes to Reduce Council
Police Looking for Pepper Spray Suspects
Niagara Falls Man Charged with Child Porn