A much-buzzed-about eatery that started out as a food cart is now expected to launch a sit-down restaurant in Portland.

Shake Shack was born outside New York City’s Madison Square Park in 2004, positioning itself as a “modern-day roadside burger stand.”

Its popularity in the NYC park led to fast growth -- very fast -- and the chain now boasts locations in 29 states plus the District of Columbia.

It’ll be 30 states when Shake Shack opens at 1016 West Burnside, next to Living Room Theaters and across the signature thoroughfare from Powell’s Books. (The eatery is also in a bunch of other countries, including Mexico and Kuwait.)

A "ShackBurger" from a Michigan Shake Shack location.Jacob Hamilton/MLive.com

Site renderings indicate that the new burger joint on Burnside will include a large covered patio as well as an uncovered outdoor eating area, reports the Daily Journal of Commerce.

Shake Shack built its reputation on the “classics” -- that is, burgers, hot dogs, fries and shakes, plus other menu offerings such as frozen custard and chicken sandwiches.

An opening date for the Portland Shake Shack has not been announced.

-- Douglas Perry

@douglasmperry

Subscribe to Oregonian/OregonLive newsletters and podcasts for the latest news and top stories.