History is being made on Seattle’s two-mile-long SR 99 tunnel under downtown, and BASF is playing a small but signific...
Bertha, the 57.5-ft diameter TBM building the ...
Bertha, the TBM mining the SR 99 tunnel in Seattle, was 219 ft from its end point as of March 27, according to the Washi...
Crews from Atkinson Construction are busying on the East Link tunnel project under downtown Bellevue for owner Sound Tra...
The Ship Canal Water Quality Project Final Supplemental EIS is now available. All documents are available on the project...
Crews building the SR 99 tunnel in Seattle reach another milestone on Dec. 13 as they installed the 1,000th ring. Tunnel...
On Nov. 8, voters approved Sound Transit 3 (ST3), a ballot measure that provides $54 billion in funding to expand and im...
The SR 99 TBM Bertha passed a significant milestone in its journey underneath Seattle. When the machine tunneled past Pi...
Seattle Public Utilities (SPU) has prepared a Draft Supplemental Environmental Impact Statement (EIS) to better understa...
Seattle Tunnel Partners (STP) resumed mining following a temporary stop to change tools on the cutterhead of Bertha, th...
Tunneling for the Northgate Link project for Sound Transit in Seattle was completed on Sept. 1 as the TBM mining the sou...
Seattle Tunnel Partners crews have now mined more than 4,000 ft as they continue their push toward the SR 99 tunnel’s...
Seattle Tunnel Partners resumed mining July 18 following a month of routine and hyperbaric maintenance on Bertha, the TB...
After another week of good tunneling progress, Seattle Tunnel Partners is preparing Bertha, the SR 99 tunneling machine,...
Seattle Tunnel Partners has now bored more than one-half mile of the SR 99 tunnel. As of June 13, Bertha, the SR 99 tunn...
