At a cost of $4 billion, tracks were built across 550km (340 miles) of permafrost, reaching an altitude of 5,000 metres (16,400 feet)—the highest railway in the world.
The first tracks were built in 1866 and were bought in 1904 by the New Haven, which expanded them and added the stations.
Most of the tracks are built on heavy hip-hop backbeats, tastefully embellished with live and synthesized instruments, topped with atmospheric vocals.
The architect, Douglas Korves, of Larsen Schein Ginsburg Snyder, said the opportunity for development came from a historical hiccup that dates to the 1930's, when the tracks were built.
One reason that Massive Attack records take so long to produce may be that Del Naja and Marshall aren't trained singers or players: tracks are built from pieces because that's what they know how to manipulate.
The proudly lo-fi tracks are built from birdcalls, static, wordless vocals, electronic blips, not-always-tuned guitars, half-audible speech, stray clanks and rustles and ticks; it can sound as if were recorded on duct tape.
Maryland transit officials had planned to tear down and replace the bridge with a longer span across what will be a wider rail corridor once the Purple Line tracks are built alongside the CSX tracks.
Mr. Harris said that International Speedway Corporation's most recent developments have not been in places like Talladega and Daytona, but just outside Kansas City, Mo., and Chicago, where tracks were built in 2001.
The association, in turn, would give up claims that it owns the land on which the tracks are built, averting a potentially lengthy and expensive battle with the state.
