Tunnels
Image source: WTNH-TV
Parts of I-84 and I-91, heavily congested highways in Connecticut, may be going underground after the state Senate approved the plan to build a tunnel underneath the Hartford and Connecticut River.
For years, the Connecticut Department of Transportation (CDOT) has known it had to do something to...
Image source: KUOW/Kate Walters
As dozens of people looked on Tuesday, Bertha broke through to daylight after a nearly 2-mile dig under Seattle that took almost four years. Seattle is one step closer to replacing the aging Alaskan Way viaduct and moving a 2-mile section of S.R. 99 underground.
Bertha is the largest tunnel-...
The North Carolina Department of Transportation (NCDOT) has unveiled plans to eliminate seven railroad crossings in the next few years.
Locomotives barreling across roadways often cause commuter back-ups and wrecks, which has become a point of concern for both residents and transportation...
Image source: Steve Ringman/The Seattle Times
Recent surveys found that the Highway 99 tunnel is a few inches off course, and Seattle Tunnel Partners (STP) has stopped digging until early next week to perform more measurements.
STP project manager Chris Dixon said late Wednesday afternoon that surveys found the concrete tunnel rings being...
The Port Authority of New York and New Jersey proposed a $32 billion capital plan for the next decade that includes $2.7 billion to build a tunnel under the Hudson River and rehabilitate the century-old one damaged by Superstorm Sandy.
The sum set aside for the tunnel is a fraction of the $24...
Until recently, the Midtown Tunnel connecting Norfolk and Portsmouth, Va., held the distinction of being considered the most heavily traveled two-lane road east of the Mississippi River.
In the more than 50 years since its original construction, traffic volume has risen from 8,400 vehicles per...
Image source: Daily Sabah
The Eurasia Tunnel, connecting the Asian and European continents underneath the Marmara seabed, will be inaugurated today in front a multinational audience.
The tunnel, expected to provide a practical solution to Istanbul's traffic problem, will cut down the travel time between the two sides of...
One of the most challenging underwater tunnel projects in the world is tracking two months ahead of schedule nearly a year after achieving a major milestone.
The Istanbul Strait Road Tube Crossing, scheduled to open by the end of the year, will provide a new connection between the Asian side of...
Photo: Elaine Thompson, Associated Press
The troubled project to replace Seattle's Alaskan Way Viaduct with a tunnel is $223 million over budget.
The Washington state Department of Transportation said Thursday the additional money is needed for the project, originally slated to cost $3.1 billion, because of repeated delays. Those delays...
News
July 20, 2015
According to an announcement by Washington state transportation officials, work on the beleaguered State Route 99 tunnel will resume on Nov. 23, with the boring machine known as “Big Bertha” set to emerge at the north end of the city’s downtown area approximately one year thereafter.
Moreover,...
News
July 15, 2015
The U.S. DOT’s Federal Highway Administration (FHWA) published the final rule for national tunnel inspection standards that will serve as the foundation of the nation’s first standardized tunnel inspection program. It will be modeled after the FHWA’s successful bridge program established nearly a...
News
November 10, 2014
Seattle Tunnel Partners, with whom the Washington State Department of Transportation contracted for the $3.1 billion Alaskan Way Viaduct Replacement project, were allowed to resume work recently after a state-mandated delay of nearly two weeks following the discovery of shell material in the earth...
News
July 17, 2014
Tunnel vision can improve; just ask those at the Nevada Department of Transportation.
The agency is about to complete the Carlin Tunnels project on I-80, and the highlight of the enhancement is an LED lighting system that will enhance driver visibility by dimming or brightening according to...
News
December 31, 2012
It’s time to help a bear cross a street—at least along Georgia’s State Route 96.
The Georgia Department of Transportation (GDOT) announced a series of tunnels would be constructed along the corridor to help protect the grizzly animals as they roam what is left of their natural habitat. A first of...
News
April 10, 2012
A new report has revealed that New Jersey Gov. Chris Christie exaggerated numbers behind the cancellation of the new transit tunnel across the Hudson River.
The Government Accountability Office (GAO) is expected to release a report this week that documents how Christie threw out inflated project...
News
April 05, 2012
There will be better lights at the end of the Big Dig tunnels, and at the beginning, and everywhere else.
Massachusetts State Highway Administrator Frank DePaola is ordering that all the lights be replaced, which will cost $54 million and take up to two years to execute. Since a light fixture...
Article
May 19, 2011
Last year, Applied Ecological Services Inc., Michael Van Valkenburgh Associates and HNTB Corp. submitted an entry to the ARC International Wildlife Crossing Infrastructure Design Competition. The competition brief asked for collaboration among ecologists, landscape architects and structural...
Article
December 17, 2010
The camera stalls, for just a moment, at the southern edge of downtown Seattle. It faces north, toward the time-worn and earthquake-damaged Alaskan Way Viaduct, a double-deck highway that has spanned the downtown waterfront for nearly 60 years.
With portions of the viaduct slated for demolition...
Article
September 07, 2010
South Korea’s largest infrastructure project is expected to open in December 2010, and the crossing will significantly reduce what is currently a three-hour commute time between the city of Busan and Geoje Island, home to two of the world’s biggest shipyards.
Being built by GK Corp., a consortium...
Article
September 07, 2010
Tunneling under the River Tyne in the United Kingdom has a history that goes back to the 1950s, when a pedestrian and bicycle crossing was created to provide workers with better access to jobs in the shipbuilding industry on both banks of the river.
The original Tyne tunnel, which was used by...
