Traffic on the Northeast Extension of the Pennsylvania Turnpike is back to normal.

At 8:48 a.m., two cars and a truck collided in the southbound lanes, leading to the closing of both directions near Lansdale.

The tractor-trailer was destroyed by fire after slamming into the concrete median, sending debris into the northbound lanes.

No fatalities were reported, but at least two people in the cars were injured, according to Pennsylvania State Police.

At 10:48 a.m., all northbound lanes were reopened, setting six miles of backed-up traffic free.

Once the jam dissipated, northbound motorists were again be permitted through the Mid-County Interchange in Plymouth Meeting, police said.

At 12:48 p.m., all southbound lanes were opened, after about an hour and a half of only one lane getting by.

For turnpike updates and detour information, visit: http://www.paturnpike.com/tools/tools.aspx.

For more traffic info, visit: http://go.philly.com/traffic.

Contact staff writer Peter Mucha at 215-854-4342 or pmucha@phillynews.com.