Columbus city officials say they do not expect a trickle-down effect from the financial problems of its bike-sharing supplier. Bikes and docking stations are made by Bixi, a company that has filed for bankruptcy protection with nearly 50-million-dollars in debts. City officials say the CoGo Bike Share program is run by a management firm called Alta Bicycle Share, and the city owns all the bicycles. CoGo is an underwriter of some WCBE programming.