HANNIBAL â Work continues on the Hannibal riverfront. âWe have a lot of things going on right now with the riverfront,â said Andy Dorian, the city of Hannibalâs director of central services, during the April meeting of the Hannibal Park Board in council chambers at Hannibal City Hall. One area of focus is the boat gangways. âWe are going to have to make some adjustments to the boat gangways,â Dorian said. âThe far gangway goes under water too early. We are going to make a little bit of an adjustment on how we pivot that to the higher sidewalk and probably make the first dock the ADA dock and maybe in the future get an additional gangway.â