Search results
Results from the WOW.Com Content Network
A plan for conventional heavy rail (HRT) is being developed by Bechtel. The rival design is a monorail as planned by BYD LA SkyRail Express (LASRE). [25] A scoping process carried out by Metro from November 2021 to February 2022 showed a majority of the public favoring heavy rail over monorail, 93% to 7% respectively. [26]
Big Dig. The Big Dig was a megaproject in Boston that rerouted the then elevated Central Artery of Interstate 93 that cut across Boston into the O'Neill Tunnel and built the Ted Williams Tunnel to extend Interstate 90 to Logan International Airport. Those two projects were the origin of the official name, the Central Artery/Tunnel Project (CA/T ...
Bechtel completed the task in eight months and under budget. [229] Boston Central Artery/Tunnel: Section of Interstate 93 that runs through downtown Boston, Massachusetts. Bechtel and Parsons Brinckerhoff jointly supervised the planning and construction that re-routed and rebuilt the Central Artery from an elevated roadway to a series of ...
Sea level. Lowest elevation. 135 ft (41 m) below sea level. The Transbay Tube is an underwater rail tunnel that carries Bay Area Rapid Transit 's four transbay lines under San Francisco Bay between the cities of San Francisco and Oakland in California. The tube is 3.6 miles (5.8 km) long, and attaches to twin bored tunnels. [2]
Environmental concerns with the Delta tunnel. The plan arrives with the state in the throes of one of the worst droughts ever recorded. But a proposal to replumb the Delta, in one form or another ...
There were also plans for a third-rail powered subway line (Twin Peaks Tunnel) under Market Street in the 1910s. [2] A 1915 study prepared for the cities of Oakland and Berkeley called a rapid transit link between the two cities "imperative," suggesting new street railway lines or an elevated railway between the two cities. [3]
Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort ...
Traffic crawls over a closed Fort Point Channel Tunnel entrance in Boston during rush hour on July 11, 2006, a day after the collapse.. The Big Dig ceiling collapse occurred on July 10, 2006, when a concrete ceiling panel and debris weighing 26 short tons (52,000 lb; 24,000 kg) and measuring 20 by 40 feet (6.1 by 12.2 m) fell in Boston's Fort Point Channel Tunnel (which connects to the Ted ...