Construction Equipment
Ag Equipment
Roadbuilding
Dealers
Business
Technology
Tag: tunnel construction
Roadbuilding
State Route 99 closed in Seattle for tunnel alignment; crews making good progress
With the closure of State Route 99 due to tunnel work, construction crews are on schedule with good weather, including unusually warm daytime temperatures.
January 18, 2019
Roadbuilding
Flight through Bertha’s tunnel shows SR 99 construction progress
The drone footage below, from the Washington State Department of Transportation (WSDOT), takes you on a tour of the SR 99 tunnel that tunnel boring machine Bertha excavated under Seattle. The drone enters the end of the tunnel nearest the Space Needle and travels through the tunnel to the other end near the stadiums. The […]
November 1, 2017
Roadbuilding
USDOT provides $338.5 million TIFIA loan for Chesapeake Bay Bridge-Tunnel expansion
The U.S. Department of Transportation (USDOT will provide a $338.5 million Transportation Infrastructure Finance and Innovation Act (TIFIA) loan to finance a new tunnel at Thimble Shoal Channel on the Virginia side of the Chesapeake Bay Bridge-Tunnel (CBBT). The CBBT opened to traffic April 15, 1964, with one lane traveling in each direction. Parallel bridges […]
November 17, 2016
Roadbuilding
Drone flythrough of twin tunnel construction at East End Crossing in Kentucky
Drone video footage from the Louisville-Southern Indiana Ohio River Bridges Project offers a look at ongoing construction of twin 1,700-foot-long tunnels on the Kentucky side of the East End Crossing, a project that is scheduled to be completed in late 2016. The twin tunnels are said to be the second-longest in the state, with only the Cumberland Gap tunnel […]
August 3, 2016
Roadbuilding
PHOTOS: Big Bertha’s 2,000-ton front end lifted to the surface. How the world’s largest tunneler was raised
[imagebrowser id=225] After a year of slumber and almost a month after chewing her way into a 12-story repair pit, Big Bertha, the world’s largest tunnel-boring machine, is finally under repair in Seattle. Crews worked for the better part of March to disassemble the machine’s front end before lifting the machine’s cutterhead and body shield panels—a […]
April 1, 2015
Construction Equipment
Camera gives a live view of construction on Big Bertha’s 12-story repair access pit
Just because Big Bertha is down for nearly a year, that doesn’t mean work around the world’s largest tunnel boring machine has come to a halt. And now thanks to a camera set up by the Washington State Department of Transportation, anyone can watch as that work progresses. After completing one-tenth of the 1.7-mile State Route 99 […]
May 13, 2014
Construction Equipment
Before Bertha repairs begin, archaeologists will test soil for artifacts
Before workers in Seattle begin to dig a 12-story pit to make the necessary repairs to get the world’s largest tunnel boring machine running once again, they must step aside to allow archaeologists to search the soil for artifacts. Sixty vertical holes were drilled into the soil 48 feet above dormant Big Bertha, the tunnel-boring […]
March 25, 2014
Construction Equipment
Tunnel-boring machine Big Bertha shut down for “months” due to complexity of needed repairs
Washington State Department of Transportation officials say Big Bertha, the world’s largest tunnel-boring machine, is likely out of commission for months. An inspection conducted after the machine overheated in late January found that several cutterhead openings were clogged with dirt along with considerable damage to seals around the machine’s main bearing, according to a report […]
February 11, 2014
Page 1 of 1