HBO filming in the Hudson Valley is going to shut down a congested local road during rush hour for a number of days.

HBO's “I Know This Much is True”, starring Mark Ruffalo will force the closure of US-209 between NY-28 and Sawkill Road in Ulster County on Monday, April 22 and Tuesday, April 23, according to the Town of Ulster Town Clerk.

"The scenes take place in 1960's which necessitates complete control of the surrounding traffic so that period appropriate vehicles are placed on the roadway," Town of Ulster Town Clerk wrote on Facebook while warning drivers of the upcoming road closure.

The road will be closed for filming from 5 a.m until around 7 p.m. on both days, officials say.

A plan will be in effect detouring traffic onto Sawkill Road for the duration of the shoot. HBO officials are working with the New York State DOT to place signs that indicate the date and times of the closure and detour one week in advance of the shoot at DOT approved locations.

Ruffalo, who lives in the Hudson Valley, is playing twin brothers and serving as executive producer in the limited series based on the best selling novel by Wally Lamb. Oscar winner Melissa Leo, Rosie O'Donnell, Archie Panjabi, Imogen Poots and Juliette Lewis also star in the miniseries.

hthttps://www.youtube.com/watch?v=-iD6UNSzTzI&list=PLjNXQXk47NS4_FngmWYvFY4SwJv27H5_e

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