U.S. cities are increasingly putting freeway segments underground and covering them with parkland. Whether called a lid, deck, bridge or tunnel, there are already some 20 highway parks in the country, several under construction — most notably, the Rose Kennedy Greenway park atop Boston’s Big Dig — and at least a dozen more in the planning pipeline. As urban auto impacts become less welcome, these decks have moved from the novel to the expected. Despite the sometimes considerable cost — as much as $500 per square foot — they are no longer classified as porkbarrel. They’ve been redefined as amenity investment with high economic payback.

Cities Reap Rewards for Decking Highways with Parks was last modified: March 6th, 2012 by ksalay@pps.org
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