Now spread to three sites along the river, the Paris Plages scheme hasn’t just shown how delightful the riverside can be, it has proved that the city could divert motor traffic without kick-starting Armageddon. Taking note, the city barred cars permanently from a long stretch of the Left Bank in 2013 to create a waterside park. The results of this plan are already impressive: 4 million visitors in its first 18 months and a 15 percent reduction in local nitrous oxide pollution.
http://www.citylab.com/design/2015/05/in-paris-plans-for-a-river-seine-reinvention/392639/
The garden bridge is stupid, Lumley can cock off, it works out at £600k per tree.