An entrance sign for the Long Island Expressway is shown...

An entrance sign for the Long Island Expressway is shown on Jan. 27, 2015. Credit: Uli Seit

To accommodate sign structure safety work, all westbound lanes of the Long Island Expressway in Hauppauge near Motor Parkway, Exit 55, are to be closed Wednesday and Thursday from 10 p.m. to 5 a.m., the state Department of Transportation said.

Shutdown begins around 9:30 p.m., the DOT said.

Motorists are advised to use alternate routes or be prepared for travel delays.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

Visiting Christmasland in Deer Park ... LI Works: Model trains ... Get the latest news and more great videos at NewsdayTV

Get the latest news and more great videos at NewsdayTV Credit: Newsday

Visiting Christmasland in Deer Park ... LI Works: Model trains ... Get the latest news and more great videos at NewsdayTV

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