A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
Three times per year, TBM: Tunnel Business Magazine recaps the status of major tunneling projects underway in the United States and Canada. Below is the Tunnel Update that appeared in the October 2017 issue of the print edition.
CALIFORNIA Los Angeles. Crenshaw/LAX / Walsh/Shea Corridor Constructors This $1.278 billion project for the Los Angeles Metropolitan Transportation Authority (Metro), being built by a joint venture of Walsh and Shea, is an 8.5-mile light-rail line that will run between the Expo Line on Exposition Boulevard and the Metro Green Line.
The North Shore Connector is a light-rail extension opened in 2012 in Pittsburgh, Pennsylvania.The connector extends the Pittsburgh Light Rail system from its previous terminus at Gateway Center Station in the Central Business District to the new North Side Station and Allegheny Station on the North Shore by way of a tunnel under the Allegheny River.
Descriptive history and current conditions on the Ted Williams Tunnel (I-90) in Boston.
History and information on the Pennsylvania Turnpike. PLANNING A GRAND HIGHWAY. Until the first shovels of dirt were thrown, the PTC relied on funds from the federal government, the Department of Highways, and loans from engineers from private industry.
THE LIST: A Ali Baba and the Forty Thieves (passive) . Group sits in a circle and chants Ali baba and the 40 thieves, while doing an action. The group leader on the next beat changes the action and then on the next beat the person beside him/her does that action.
Deep clean those dirty floors with the Hoover T-Series WindTunnel Rewind Upright Vacuum. The WindTunnel Rewind combines Dual Path WindTunnel Technology for the best carpet cleaning performance, with the benefits of Cyclonic Technology for strong suction power and less filter maintenance.
Yellowcard, my life will forever be changed because of your music. I will never forget listening to Ocean Avenue for the first time on a drive with my family in the car to Salt Lake City as a 14 year old boy.
The Blue Ridge Parkway overlooks were each carefully considered and specifically designed... as windows to a vista beyond or as access to a site that could not be seen from the roadway.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.