A foundation created by the family of W. Jerome Frautschi and Pleasant Rowland is withdrawing plans to redevelop a block of State Street for the time being, and they may decide to drop it altogether, a spokesman said Thursday.

"I don't know when the decision on whether to proceed or not will be made," said George Austin, project manager for the $10 million proposal to remake the historic 100 block of State Street.

Austin said the project has broad support, but Madison Mayor Paul Soglin said Thursday night that it appeared unlikely to win city approval in its current form.

Austin this week asked the city to remove the project from Monday's Landmarks Commission agenda while Frautschi and Rowland decide whether to continue.

Soglin said he wasn't surprised because the developers have said they wouldn't proceed without approval of a plaza that they insist is an integral feature of their design

"Reading the comments and the actions taken so far, it is unlikely it would be approved as they've proposed it," Soglin said.

The Landmarks Commission and Urban Design Commission don't appear to favor the design, Soglin said.