State officials have tapped Trinity Financial to develop a prime development parcel along the Rose Kennedy Greenway in Boston, two months after pulling a joint venture between Hines Interests and Raymond Property Co. off the Bulfinch Triangle site.

Trinity plans to construct a 50,000-square-foot supermarket and between 225 and 275 market-rate rental units on the Haymarket-area site, which was created when construction crews buried the old elevated Central Artery.

The development site is near the 241-unit Avenir apartment complex across the street from the TD Garden, which Trinity developed and sold to Archstone.

Sarah Barnat, a project manager at Trinity, said the new Greenway development would be modeled after the Avenir project. It will be built to the same level of finishes, she said, and bring together ICON Architecture, which designed the Causeway Street complex, and Dimeo Construction, which built it.

"This is a centerpiece location," Barnat said. "We had a fantastic experience with Avenir, and now we know there’s a market for this type of product, and we know the financial markets are receptive to it. We know people want to live in the Bulfinch Triangle, and we’re ready to embark on this project. We’re going to be using the lessons we learned at Avenir, and bringing them to this block."

Barnat said Trinity will begin meeting with abutters in the next few weeks, and will initiate the City Hall development review process in September. She said Trinity hopes to have a shovel in the ground by the second or third quarter of 2011.

The Massachusetts Department of Transportation (MassDOT) and the Massachusetts Bay Transportation Authority, which jointly control the Greenway parcel, tapped Trinity after booting Hines and Raymond, the site’s previous developers. According to a May letter from an MBTA attorney, Hines and Raymond owed the agencies $454,000 in rent for the development site.