“Highways lids, i.e. ‘Cut-and-cover tunnels’ can be thought of as little more than extremely wide bridge structures built over a depressed freeway. This allows a freeway to be completely hidden from view as it courses underneath a neighborhood. Furthermore, the area on top of the covering structure can be utilized as urban space such as parkland.” (source)
US DOT re: Cut and Cover Tunnels
Urban parks take over downtown freeways (includes case studies)
Cities are increasingly decking highways with piles of greenery and new development
Ohio highway cap at forefront of urban design trend
John Crompton (Tx A&M’s Dept. of Recreation, Park & Tourism Sciences)
The Impact Of Parks And Open Spaces On Property Values
Houston’s Bayou Greenways Benefit Report
New York City’s Inventory of Decking Opportunities Over Transportation Properties
(click to view the actual .pdf)
Reconnect Austin 