A 13.46m diameter Herrenknecht Mixshield TBM has broken through into the future Balboa station on Panama Metro Line 3 after completing the first-ever TBM undercrossing of the Panama Canal at depths exceeding 60m below sea level. The 5,600kW, 26,616kNm machine, fitted with an accessible cutterhead and more than 4,500 sensors linked via the Herrenknecht.Connected platform, has achieved peak advance of 150 segment rings (about 300m) per month through mixed sandstone, tuff, breccias and basalt. Around 1.5km of the 4.5km twin-track tunnel remains to final breakthrough.

Federal funding for New York’s US$16bn Hudson Tunnel Project has been frozen, forcing the Gateway Development Commission to suspend works from 6 February after spending over US$1bn and employing about 1,000 site workers. A Manhattan federal judge has issued a temporary restraining order, giving the administration until 5 p.m. on 12 February to restore reimbursements or appeal, while contractors warn that demobilisation, resequencing and remobilisation will add cost and delay. Sites are now in “safe-pause” mode, with dewatering, ground support and environmental monitoring maintained, and assembly of two Herrenknecht TBMs in New Jersey likely to slip beyond the planned spring 2026 launch without funding certainty.

Swiss Federal Railways has awarded an Implenia/Marti 50:50 joint venture five of six MehrSpur Zurich–Winterthur lots worth just under CHF 1.7 billion, including the 8.3 km Brüttener tunnel (Lot 240) with twin 10 m diameter single-track tubes and a 1 km spur to Zurich Airport. TBM excavation will start in August 2029, with a roughly ten-year construction phase using BIM for planning and execution and extensive special foundations, earthworks and embankments. Additional works cover full redevelopment of Dietlikon station, about 6 km of new track across Dietlikon and Wallisellen sections, multiple underpasses, bridges and the Neumühle railway bridge and Storchen underpass near Winterthur.