Icy roads greeted drivers across New Jersey and Pennsylvania Sunday morning, causing accidents and bridge closures.

Disabled vehicles on the New Jersey Turnpike during icing (Kathleen Wells)

Two accidents on the New Jersey Turnpike closed the southbound lanes for both the car and truck lanes at Exit 9 (Route 18) in New Brunswick and the truck lanes northbound at Exit 12 in Carteret. Another crash on the northbound Garden State Parkway  in Sayreville closed the road as well.

There were a number of minor accidents along the Turnpike and Parkway as well as Interstate 80 near Hackensack, I-280 in Roseland and the 42 Freeway in Deptford, according to New Jersey Fast Traffic.

New Jersey State Police in a tweet say there were 428 reported accidents on Sunday morning throughout the state and 186 aids to motorists.

The Delaware River crossings--the Walt Whitman, Commodore Barry, Betsy Ross, Tacony Palmyra and Burlington Bristol Bridges-- were all closed to traffic for several hours on Sunday morning  but have all since reopened.

I-95 in Philadelphia approaching the Ben Franklin Bridge (Sean Romero)

Heading toward New York, the Outer Bridge and Bayonne Bridges were also closed . The Goethals Bridge has reopened heading east into Staten Island.

New Jersey Transit suspended all bus service in North Jersey until crews had a chance to treat roadways. South Jersey service was also suspended for a time but is once again operating. Cross honoring is in effect systemwide between trains, buses and light rail.

The speed limit was reduced to 45 miles per hour for the entire length of the New Jersey Turnpike. A 50-mile-per-hour limit was in effect on the Garden State Parkway between Exit 125 (Rt 35) in Sayreville and Exit 160 (Rochelle Park).

Meteorologist Dan Zarrow says the culprit is freezing rain-- liquid rain that freezes on contact with cold surfaces, including roads and cars. Temperatures will rise into the lower 50s by afternoon across the state, according to Zarrow.

Icy conditions and accidents have also closed highways and bridges in and around Philadelphia.  State police in Delaware County say two people were killed in a crash involving multiple vehicles in the southbound lanes of Interstate 476 on Sunday morning.
Another pileup involving more than 20 cars that shut all lanes of Interstate 76 west of Philadelphia was blamed on "flash-freezing."

The Pennsylvania Turnpike was closed from the Delaware River to Morgantown.

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The Associated Press contributed to this report