The 12 Lane Bridge

The Ship_Canal_Bridge is an impressive structure. Its like the upper 8 lane deck is the Seattle part of bridge and the 4 lane lower deck is the Vancouver, BC bridge. Imagine if everything was funneled into a 4 lane Vancouver bridge there. Fortunately, its a 12 lane bridge. Perhaps some day 1 of the express lanes might accommodate a bus lane. https://en.wikipedia.org/wiki/Seattle#Transportation

The Van_Brienenoord_Bridge sure is nice and wide. https://en.wikipedia.org/wiki/Van_Brienenoord_Bridge#History Its really two 6 lane bridges.

https://www.google.com/maps/place/Van+Brienenoordbrug/@51.9046314,4.5266954,4257m/data=!3m1!1e3!4m6!3m5!1s0x47c432f1df9975fd:0x1ad62782ed0e125a!8m2!3d51.904493!4d4.542333!16s%2Fm%2F02rn_mt!5m1!1e2?entry=ttu&g_ep=EgoyMDI1MDEwOC4wIKXMDSoASAFQAw%3D%3D

https://en.wikipedia.org/wiki/Rotterdam#Transportation

https://en.wikipedia.org/wiki/Sir_Leo_Hielscher_Bridges Fantastic 6 lane duplication or twinning to become a 12 lane crossing. https://en.wikipedia.org/wiki/Sir_Leo_Hielscher_Bridges#Design 

https://www.google.com/maps/place/Gateway+Bridge/@-27.4453353,153.1008005,395m/data=!3m1!1e3!4m15!1m8!3m7!1s0x6b91579aac93d233:0x402a35af3deaf40!2sBrisbane+QLD,+Australia!3b1!8m2!3d-27.4704528!4d153.0260341!16zL20vMDFiOGpq!3m5!1s0x6b915919cd8b7213:0x5d18b4ba74a3b7c9!8m2!3d-27.445751!4d153.1015765!16s%2Fg%2F11c1xfgwy0!5m1!1e2?entry=ttu&g_ep=EgoyMDI1MDEwOC4wIKXMDSoASAFQAw%3D%3D

https://en.wikipedia.org/wiki/Brisbane#Infrastructure