Road conditions in the Maritimes are deteriorating as the region is blasted with more snow, freezing rain and high winds.

The Confederation Bridge connecting New Brunswick and Prince Edward Island was closed to traffic after a nine-vehicle crash in whiteout conditions on the bridge.

Environment Canada warned drivers in Nova Scotia of flash freezing. The slush-covered roads and sidewalks could become dangerous as the temperature falls to -6 C by Sunday night.

The storm dumped snow on New Brunswick and Prince Edward Island overnight Saturday and brought a mix of rain, freezing rain and snow to Nova Scotia.

Winds gusting between 90 and 110 km/h whipped snow around the region making visibility an issue. The Atlantic coast saw large, pounding waves.

At one point 3,000 Nova Scotia Power customers were in the dark.

Most of neighbouring New Brunswick spent the morning digging out from the heavy snow storm.

New Brunswick storm

A man shovels out in Saint John after the region was walloped with snow on Saturday. (CBC)

In Saint John, city buses were pulled off the roads and several emergency vehicles required a plow to get them where they needed to go.

Cpl. Dan Allain said they had several calls from drivers stuck in snow drifts, especially on highway exit ramps.

Plows were pulled off the road in Prince County, P.E.I., due to deteriorating conditions. Primary roads had been plowed but many secondary roads remain covered in snow.

It's not just drivers who are having difficulty travelling. Sunday morning's ferry sailings between Port aux Basques and North Syndey were cancelled. The ferry connecting Digby and Saint John was also not running.

There was a handful of flight cancellations at the region's airports.

The storm comes days after a fierce mix of snow, rain and wind closed schools and left thousands of customers without power in parts of Atlantic Canada.

With files from the Canadian Press