MARCY, N.Y. -- A tractor-trailer jackknifed on Route 49 in Marcy Monday afternoon.
The truck jackknifed, which in turn blocked all lanes shutting down the highway.
The big rig somehow spun around, and was facing eastbound in the westbound lanes.
No other vehicles were involved.
State police have since reopened Route 49.
There is a ban on empty tractor-trailers, and tandem tractor-trailers on the Thruway.