Storebaeltsforbindelsen - Great Belt Fixed Link

Storebaeltsforbindelsen is the longest bridge in Denmark (11 miles) and connects the islands of Funen and Zealand. Before the bridge, there was ferry service which required approximately 60 minutes of travel. The bridge makes this trip a 10-minute car ride, which resulted in an increase of traffic by nearly 300% once construction was complete. This suggests some lessons for the Columbia River Crossing perhaps.
 

Combined with the Oresund Bridge which connects Denmark and Sweden, one can travel by car from Sweden to Germany. The bridge was pretty impressive.