Bridge and Tunnel

http://www.balsabridge.com/bridge-van.htm

http://fraseropolis.com/2014/04/25/port-mann-bridge-the-case-of-the-disappearing-traffic

http://www.vivaboo.com/seattle-wa-is-home-to-the-longest-floating-bridge-in-the-world

http://www.vivaboo.com/the-architectural-beauty-of-floridas-sunshine-skyway-bridge/

http://www.vivaboo.com/the-golden-gate-bridge-welcoming-you-to-san-francisco-ca/