Alaskan Way Tunnel Sr99. Seattle (USA)
Tender Project in Offer and Collaboration in the drafting of the Detail Project..
Procurement in the tendering phase.
Collaboration with the main engineering in the drafting of the detail project.
Length: 1755.9 mi in TBM and 0.39 yd in fake tunnel.
Øint ≈ 17.3 yd, Excavated in geotechnically difficult terrain.
Øexcav = 19.17 yd (world record).
Initial well and tunnel boring machine exit.
Urban tunnel excavated under the city's most important buildings.