Related Articles

Sinkhole repair in Colorado on US 24 by Hayward Baker
Failures

Hayward Baker’s Emergency Sinkhole Repair, US 24, Colorado

August 2, 2012 rockman Failures Comments Off on Hayward Baker’s Emergency Sinkhole Repair, US 24, Colorado

Hayward Baker has been working 18-hour days for Colorado DOT to repair a sinkhole on US 24 caused by an abandoned railroad tunnel. The link below takes you to a photo gallery on Hayward Baker’s […]

AASHTO Faces of Transportation 2012 Grand Price Winner - Caldecott Fourth Bore Tunnel Breakthrough by Metropolitan Transportation Commission Photographer Karl Nielsen
Miscellaneous

Top Picks in AASHTO Photo Contest Have Geo-engineering Subjects

November 30, 2012 rockman Miscellaneous Comments Off on Top Picks in AASHTO Photo Contest Have Geo-engineering Subjects

Every year, the American Association of Highway and Transportation Officials (AASHTO) has a photo contest called Faces of Transportation. This year’s top winners had a strong geo-engineering theme. A photo of the Caldecott Fourth Bore […]

Sinkhole (now filled with concrete) caused by ground loss during Bertha Tunneling
Project Related

More Trouble for Bertha TBM, Sinkhole, Tunneling Suspended

January 22, 2016 rockman Project Related Comments Off on More Trouble for Bertha TBM, Sinkhole, Tunneling Suspended

The Bertha TBM creating the Alaska Way Viaduct Replacement Tunnel and the Seattle Tunnel Partners JV just can’t seem to catch a break. After being stopped for nearly 2 years to replace the entire cutterhead […]