At one point there was sound logic behind a Knik crossing; sound enough to raise the ire of the West Coast Congressional delegations, the real source of opposition to the bridge.   A roll on - roll off terminal at the Port of Anchorage and a route to the road system that didn't thread through downtown Anchorage would provide a fast surface route to the interior US for a class of cargo too valuable for a  long  container ship slog to the West Coast but not valuable or time sensitive enough to put on an airplane.   The West Coast ports saw the danger to their traffic and opposed the project.   While we fought about it, Prince Rupert built a World class RO-RO port connected to the Canadian and US rail system and rendered the Alaska Highway route superfluous and the opportunity was missed.