If it becomes Maine’s tallest building as expected, an 18-story apartment tower to be built in downtown Portland would claim a title that hasn’t changed hands in over half a century.

Or, depending on the measuring stick, the “tallest” distinction could remain with a structure in Lewiston that’s held it since 1890.

One thing is clear: Redfern Properties’ proposed 190-foot building at 200 Federal St., Portland, would be the first new high-rise to rise anywhere in Maine for over a decade.

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