More U.S. cities are planning to tear down elevated highways blamed for urban blight and economic isolation, but thanks to Boston's Big Dig, almost no one wants to replace highways with tunnels. Boston's example has become a byword for waste, fraud and abuse -- so much so that voters in Seattle voted 70% against a project that opponents compared to the Big Dig. Instead of highways or tunnels, urban planners are stressing surface streets that bring low-speed traffic into downtown areas needing revitalization.

Related Summaries