tunnel boring machine: 2 of 17
INFRASTRUCTURE
TBM build-up begins for Potomac River Tunnel bore
DC Water lowers TBM cutterhead underground, ready to begin boring the Potomac River Tunnel
23 January 2026
INFRASTRUCTURE
Sydney Metro TBMs emerge at Westmead
With tunnelling work completed, strip down and removal of TBMs Betty and Dorothy begins
13 January 2026
INFRASTRUCTURE
Terratec marks key tunnelling milestones on Chennai Metro Phase II
Terratec advances TBM on Chennai Metro Phase II and launches another TBM on Corridor 5
06 January 2026
INFRASTRUCTURE
UK Government greenlights Lower Thames Crossing tunnelling machine
Search begins for a giant TBM to tunnel 60m below the Thames in the Southeast of England
04 December 2025
INFRASTRUCTURE
TBMs set to break new ground on Western Harbour Tunnel
Factory acceptance testing completed on second TBM for Australian infrastructure project
28 November 2025
INFRASTRUCTURE
TBMs drive 83.4km through alpine rock
Two of eight Herrenknecht TBMs, "Ida" and "Lilia", breakthrough on Brenner Base Tunnel project
25 November 2025
INFRASTRUCTURE
TBM launch caverns completed in Sydney
Caverns completed and TBM assembly works begins for Western Harbour Tunnel
13 November 2025
INFRASTRUCTURE
Over half of Rocchetta Tunnel excavated
First 4km of the Rocchetta Tunnel on Naples-Bari high-speed rail line excavated by Webuild
13 November 2025
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