Westbound lanes of highway to be closed until about 10 p.m.Two people, including a child, were critically hurt after a pair of crashes Tuesday evening on Hwy. REGISTER / SIGN IN TO UNLOCK MORE ARTICLESSubscribe now to read the latest news in your city and across Canada. THIS CONTENT IS RESERVED FOR SUBSCRIBERS ONLYThe OPP’s Highway Safety Division said the incident began at about 5 p.m. with a two-car crash on the westbound lanes of the 403 near Mavis Rd. Child, adult critical as crash shuts down westbound 403; groups clash in Richmond HillTry refreshing your browser, orWe apologize, but this video has failed to load. The OPP said the Mississauga Detachment is investigating the crash and that all westbound lanes of the 403 will be closed until about 10 p.m.