Long before Donald Trump promised to “drain the swamp” in Washington, the U.S. Environmental Protection Agency issued a set of very detailed directions for ending the persistent flooding of the District of the Columbia’s 61-square-mile watershed from the city’s combined-sewer overflow system.
On the first major construction job in decades along a busy stretch of Interstate 70, the project team expanded two highway tunnels, added an eastbound freeway lane and provided for future westbound capacity.
The tunnel-boring machine will dig twin 1.1-mile-long tunnels for the Los Angeles Regional Connector transit project, with tunneling to begin in early 2017.
After examining several alternatives for a new crossing of Hampton Roads in southeastern Virginia, the region’s transportation leaders have opted to focus on expanding the capacity of its existing infrastructure.
Located beneath the Bosporus in one of the world’s most seismically active areas, the first-ever roadway tunnel connecting Asia and Europe is set to open in late December—nearly a year ahead of the original schedule.
An approximately four-mile-long, 18-ft-diameter and 200-ft-deep
tunnel to mitigate storm water and combined sewer overflow into the Connecticut River and Long Island Sound is slated to begin construction this month.
Under the design-build contract for the 5,700-ft-long Thimble Shoals tunnel parallel to the existing crossing in Virginia, construction would start in 2017.
