German-based TBM manufacturer is progressing on a challenging dig under the Elbe River estuary, and expects further tunnel work in the future as Germany prepares significant investments in infrastructure.
Building on advances at similar tunnels in China, the Dalian Bay Undersea Tunnel team had to solve numerous technical challenges and adapt to cold site conditions to complete the first cross-sea immersed tube tunnel in the northern reaches of the country.
Henry Russell’s earliest memory from inside a tunnel was riding Boston’s subway on the lap of his grandfather, a motorman for the Metropolitan Transit Authority, predecessor of the Massachusetts Bay Transportation Authority.
State water agency's final environmental impact report on the proposed Delta Conveyance Project now is reduced in scope compared to other considered options after feedback.
As the last of 41 workers trapped for 17 days emerged this week, there are growing calls to reemphasize safety and geology risks as the nation embarks on a rapid infrastructure buildout.