London’s transportation authority has secured approval to go ahead with a design, build, finance and maintain project for a 1.4-km twin highway tunnel under the River Thames between Greenwich and Silvertown.
Bay Area Rapid Transit’s Board of Directors has approved construction of a 4.7-mile single-bore tunnel as part of the $4.8-billion second phase of a program to extend service to Santa Clara County’s Silicon Valley.
The nearly $3.3-billion Alaskan Way Viaduct Replacement Project is set to finish this year, potentially, after crews overcame a saga of challenges and delays.
The last of 1,152 precast road panels for the lower deck of Seattle’s SR 99 tunnel was set into place on March 27, completing the 1.7-mile tube’s double-decked roadways.
As the cost comes down for boring water tunnels without major disruption to cities, more and more of these long-lived, cost-effective projects are on the horizon for floodwater storage and pollution prevention
A rubber safety screen falls away from a newly blasted rock at one of the many faces forming an 18-kilometer-long tunnel being built to divert traffic away from Sweden’s capital city.
