l.c.m. from Union,Mo on 10/1/2013 2:44:20 AM:
The bridge is still very narrow. Crossing from the North is the hardest. The bridge is uphill from that direction, and there is constant traffic. Returning is easier via the last cross street has a stop light. You can wait at the shoulder of the bridge, wait for red behind you, and go. It's still not ideal.
Call Revolution Cycles in Washington, they typically provide pick up and drop off, at a reasonable price. Call ahead for best results.