Deteriorating conditions on the Seaford-Oyster Bay Expressway (Route 135) caused authorities to close two trouble spots early Friday evening.
The expressway was closed in both directions at Exit 14, Jericho Turnpike in Woodbury at 6:30 p.m. because of the snow.
The southbound exit ramp from the Long Island Expressway was also closed, police said.
Driver Michelle Zilberzweig, of Bellmore said she had driven on the LIE ramp just minutes before it was closed and said conditions were treacherous.
"It was horrific," she said. "I must have passed about seven accidents on the way."
Zilberzweig said her commute from Queens lasted several hours longer than normal.