Related Links: NZTA official project website Port Of Miami Tunnel Features Big Challenges Marked by the use of an independent self-propelled culvert gantry, New Zealand's largest-ever highway project passed the halfway mark on the first drive in Auckland. The first of parallel 2.4-kilometer-long tunnel bores, when completed this fall, will mark a major milestone for the $1.2-billion Waterview Connection, the last section of a Western Ring Route.The milestone follows a brief hiatus and successful completion of essential maintenance work on the earth-pressure tunnel-boring machine (TBM), nicknamed Alice, in May. The Herrenknecht machine, manufactured at the company’s facility in China, cost
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.