The cofferdam is scheduled for removal in fall 2024, signifying below water level construction is complete. The original bridge is a swing style built in the 1950s.

As the tunneling is completed, a subcontractor constructs a permanent 14-foot-square access shaft at each site, and the rest of each excavation is filled with slurry backfill. When that work is ...

The sheet-pile bulkhead, installed between 1965 and 1972, ... The contractor begins the process by maneuvering moveable cofferdams, temporary watertight enclosures, ...

Contractors will begin installing a temporary cofferdam around a barge stranded on the Columbia River on Friday, the Coast Guard announced Wednesday. Cofferdam construction will take about 12 days ...

Because a sheet pile cofferdam was being used to isolate the foundation construction from the river, the engineers made use of what would otherwise have been a temporary back wall of the cofferdam ...

Workers last week removed the final piece of the metal sheet pile cofferdam from the barge Davy Crockett work site on the Columbia River near Camas, Wash. This effectively signals the end of a 10 ...

The cofferdam sheet pile structure adjacent to the shaft location (above the shaft in Figure 3) was for construction of a new lift station for the existing plant, ...

The tunnel has been excavated using a dry cut and cover technique, using a sheet pile cofferdam. “We built a cofferdam in the sea and isolated the area in which the tunnel will be built. Then we ...

While undertaking foundation construction for the new Tawatina Bridge on the north side of the North Saskatchewan River in downtown Edmonton, steel sheet pile cofferdams were installed as a ...