Longboat Key voters approved the town’s proposal to take out a loan to pay for the replacement of a wastewater pipeline in March 2025. More than 16 months later, the total cost of the project is still unknown.Cost estimates of $30 million and $33 million were cited previously by the town, but those were rough estimates. In the town of Longboat Key’s new five-year capital improvement plan, $42 million was budgeted for the project.The final price …