- Lunda/Ames Joint Venture to begin constructing St. Croix Crossing bridge superstructure (Dec. 5, 2013)
- Barges moving, breaking ice down St. Croix River, Mississippi River Dec. 4 (Dec. 4, 2013)
- Project update (Nov. 22, 2013)
Bridge foundations work in the St. Croix River is on track to be complete by early 2014.
Caissons are 9-feet diameter steel casings. Crews drill them up to 140 feet below the river surface, then fill them with rebar and concrete to create solid foundations for the new bridge. Then, crews pour a concrete footing and a column at each pier location that will eventually attach to the bridge superstructure. The columns will be visible and stick up about 16 feet above the water’s surface.
Completing all foundations work at Piers 8-12 requires 40 caissons, 10 footings and 10 columns. Join us as we follow the crew's progress each week.