LEWISTON — At least two of the three scenarios being considered for redeveloping the city’s Riverfront Island involve removing all or part of the massive Bates Mill Building No. 5.

“It’s a question the city has been dealing with for the last 10 years, and it’s a tough one — what do you do with a building of this size?” Lewiston City Planner David Hediger said. “It’s available if anybody has a good idea and a viable use to turn this around. But so far, nothing has happened.”

Representatives from the Boston planning and engineering firm of Goody Clancy will present three development scenarios to the public at a special workshop at 6 p.m. Jan. 18 at the Bates Mill Atrium, 36 Chestnut St.

The Goody Clancy planners will take feedback from that meeting and draft a final master plan for redeveloping the city’s Riverfront Island, the area between the Androscoggin River and the city’s canals. That area includes the Bates Mill Enterprise Complex and Bates Mill Building No. 5, Simard-Payne Park — formerly Railroad Park — upper Lincoln Street and the Franco-American Heritage Center.

A final draft of the plan is expected in March.

“If the overall consensus of this master plan is that the mill has to come down, then we can move forward,” Hediger said. “But that’s not to say that’s what needs to happen. Maybe part of it can be preserved as a museum or something else. Maybe just having 50,000 square feet available makes it a more attractive piece for some developer.”

The city hired Goody Clancy earlier this year to help draft a development plan. The consultants took a walking tour of the area in September, capping months spent pouring over previous studies of the downtown. After their walking tour in September, they spent several days meeting with residents and business owners and volunteers. They also created a project website at www.riverfrontislandmasterplan.com.

Consultants took suggestions from residents at a public meeting in November. They used those suggestions to draft three scenarios.

Hediger said the consultants presented drafts of three scenarios to a local steering committee earlier this month and continue to work out the details.

Hediger said all three draft scenarios would make it easier to access the Androscoggin River, expand on Museum L-A’s plans for a new home near Simard-Payne Memorial Park, and increase paths, roads and other links between the area and Lisbon Street.

But Hediger said Bates Mill No. 5 remains the biggest question. One scenario leaves the building in place, one demolishes part of it and a third demolishes all of it.

“One saves the building, one might not,” Hediger said. “But it asks what people think about that. And that’s good. I hope it gets people talking, to really be a part of the process.”

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