The Columbus Ledger-Enquirer reports that the project is estimated to cost $244,000, with almost $160,000 for the restroom itself.
The city Planning Department is expected to bring the proposal before the Columbus City Council on Tuesday night.
If approved, the restroom would be beneath the Frank Martin Memorial Bridge.
Of the $243,861, the state Department of Transportation would pay 80 percent, or about $195,000. The city’s portion would be about $49,000.
At least one city councilor has raised concerns about the price. Rick Jones, director of the city’s planning department, said the difficult location and special materials to be used contribute to the cost.