From: designboom.com

“It’s a clever solution to a very real and obvious problem, however.

The bridge is part of a proposal by NL Architects to connect Hong Kong with mainland China. To do that, they had to solve a problem: In Hong Kong, people drive on the left side of the road. In mainland China, they drive on the right side. Here’s the solution: A road flipper that physically twists the roads over each other.”