The Baltimore Convention Center Authority has narrowed from nine to four the number of architectural and engineering teams being considered to design a $125 million to $150 million expansion of the Pratt Street facility.
Representatives of the non-profit group formed to spearhead planning efforts for a 569,420-square-foot expansion invited the finalists to interviews next week with an eight-member advisory committee that willrecommend which team the authority should hire.
The finalists, all of which have some local team members, are groups headed by:
* Cochran, Stephenson and Donkervoet Inc. of Baltimore and Loschky Marquardt and Nesholm of Seattle.
The group includes many of the architects and engineers involved in the original Convention Center project.
* The Washington office of Hellmuth Obata Kassabaum. Othergroup members are Mario L. Schack of Baltimore and Whitney, Bailey, Cox + Magnani of Baltimore.
* A joint venture of RTKL Associates Inc. of Baltimore, Daniel Mann Johnson & Mendenhall of Baltimore and Zimmer Gunsel Frasca Partnership of Portland, Ore.
* Thompson Ventulett, Stainback and Associates of Atlanta and Mariani/Century of Towson and Washington.
Sulton, Campbell, Britt and Owens, and Cho Wilks and Benn are in this group.