Greenberg play set to begin 12-week run March 28

Paul Rudd and Bradley Cooper round out the three-thesp cast of “Three Days of Rain,” the Broadway production toplined by Julia Roberts.

The new mounting of Richard Greenberg’s 1997 play, set to begin a 12-week run March 28 at the Bernard B. Jacobs Theater, looks to be a sure-fire hit of the spring season, with Rudd and Cooper adding to the already considerable Hollywood wattage Roberts brings to her Broadway bow.

Rudd (“The 40-Year-Old Virgin,” “The Shape of Things”) appeared on Broadway in “Twelfth Night” in 1998 and “The Last Night of Ballyhoo” in 1997. Cooper (“Kitchen Confidential,” “Alias”) is making his Rialto debut.

The actors in “Three Days of Rain,” first produced Off Broadway at Manhattan Theater Club, play two roles each as the action shifts from the 1990s to the 1960s. The story follows two siblings (Rudd and Roberts) and their childhood friend (Cooper) as they sort out the legacy of their architect fathers.

Produced by Marc Platt and David Stone, the duo behind “Wicked,” and capitalized at around $2 million, “Rain” opens April 19 and shutters June 18. Sets and costumes will be designed by Santo Loquasto, with lights by Paul Gallo and sound by David Van Tieghem.

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