In order to operate under tight bridge clearances for a project in Colorado, the Washington-based Malcolm Drilling Company is utilizing the low overhead clearances of a Link-Belt 110-ton (100-mt) TCC-1100. For Malcolm Drilling, construction consisted of drilling caissons for a new five-span welded steel box girder bridge that will replace the previous bridge, built in 1953. Malcolm Drilling worked steadily to complete caissons by drilling a shaft, then lowering a rebar cage into the shaft, and filling with concrete each day. In total, 26 caissons were drilled and filled to hold up pier caps for the new bridge. Once finished, the new Grand Avenue Bridge in Glenwood Springs, Colorado will cross the Colorado River, Union Pacific Railroad, and four lanes of Interstate 70.
https://www.youtube.com/watch?v=BkaQEum47lc
