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Tag: tunnels
Safety
Trenching experts spell out OSHA Confined Spaces compliance, warn against āchoosing your rulesā
A truck is parked beside a manhole that a worker has just entered. Itās a cold day so the truck is running, but no oneās thinking about the hazardous fumes heading down the hole. Unfortunately, itās one of countless daily evidences that OSHAās confined spaces standards for the construction industry are widely misunderstood and frequently [ā¦]
December 24, 2019
Roadbuilding
Tech startup using artificial intelligence to detect bridge flaws
A technology startup company based in New York and Israel has begun deploying artificial intelligence to find flaws in bridges and tunnels long before a collapse occurs. Dynamic InfrastructureĀ aims to create āmedical recordsā for bridges, tunnels and elevated highways. Using images captured by smartphone, drones and laser scanning, the company says it can compare images [ā¦]
December 4, 2019
Construction Equipment
Gradall intros Discovery Series excavators designed for emergency cleanup
Gradall says it has come up with a low-cost solution for local and state governments facing emergency cleanup, such as occurred with last yearās string of devastating hurricanes. The companyās Discovery Series excavators were used during storm recovery on the Gulf Coast and in the Bahamas and Caribbean, a news release says. They can travel [ā¦]
January 19, 2018
Roadbuilding
Virginia approves $3.3 billion Hampton Roads Crossing expansion
The Virginia Commonwealth Transportation Board has approved a āpreferred alternativeā for improving traffic on the I-64 Hampton Roads Bridge-Tunnel that will widen roughly 12 miles of the interstate from I-664 in Hampton to I-564 in Norfolk. The plan, referred to as Alternative A, will widen roughly 12 miles of I-64 to six lanes and will [ā¦]
December 9, 2016
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 [ā¦]
November 17, 2016
Roadbuilding
Drone flythrough of twin tunnel construction at East End Crossing in Kentucky
Drone video footage from theĀ 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 twinĀ tunnels are said to beĀ the second-longest in the state, with only theĀ Cumberland Gap tunnel [ā¦]
August 3, 2016
Roadbuilding
Stronger Big Bertha cutter head lowered back into its pit for tunneling
Big Berthaās massive cutter head is back underground after months of repairs were made to get the worldās largest tunnel-boring machine back to work. According to the Seattle Times, Big Berthaās new, stronger front end took the 120-foot dive into the pit Tuesday as Dutch lifting company Mammoet lowered the 2,000-ton machine back down. In [ā¦]
August 27, 2015
Roadbuilding
Big Bertha is set to start drilling again in November after extensive repairs, testing
The worldās largest tunnel-boring machine is now scheduled toĀ get back to workĀ on November 23, nearly two years after it overheated and stalled while digging beneath Seattle. The Seattle Times reported that the construction team handling the massive undertaking of drilling the 1.8-mile Highway 99 tunnel released the new timetable and a new completion date of [ā¦]
July 21, 2015
Roadbuilding
FHWA creates new National Tunnel Inspection program
The U.S. Department of Transportationās Federal Highway Administration has created a new tunnel inspection program modeled after the decades old bridge inspection program. According to a release from the FHWA, the new National Tunnel Inspection Standards would create requirements such as routine inspections of tunnels on public roads, training and certificate programs for tunnel inspectors [ā¦]
July 21, 2015
Roadbuilding
Crews begin installation of Big Berthaās new seal system
While the rest of her massive frame waits below ground, Big Bertha has undergone the most pivotal portion of her badly-needed brain surgery. According to a report from theĀ Puget Sound Business Journal, repair crews with Seattle Tunnel Partners, the lead contractor on the drilling of a new State Route 99 tunnel beneath Seattle, have begun [ā¦]
June 16, 2015
Roadbuilding
Board rules WSDOT should have given contractor more warning about pipe struck by Big Bertha before stall
In regard to the drilling of the new State Route 99 tunnel below Seattle, the Washington State Department of Transportation (WSDOT) has few friends left. There remains disagreement between the department and the city of Seattle over who will pay to repairĀ a water main damaged during the excavation of a repair pit for Big Bertha, [ā¦]
May 12, 2015
Roadbuilding
Water main damaged by Big Bertha repair excavation could cost WSDOT $4 million
Four months after crews temporarily stopped excavation onĀ a repair pit for the worldās largest tunnel-boring machine due to ground sinkage, Seattle officials have now identified a major repair needed onĀ a water main damaged by the sinking. Back in December, excavation stopped on the repair pitĀ through whichĀ Big Berthaās massiveĀ cutterhead was recently liftedĀ as officials suspected groundwater pumping [ā¦]
April 14, 2015
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