Crews installed a road crossing over an active accelerator beam line. Because the excavation in the area reduced the beam line’s soil shielding, it was replaced with steel shielding. The work required specific protocols performed in collaboration with Fermilab’s radiological safety team.

Photo courtesy Mortenson

The project required extensive reconfiguration and relocation of utilities on other facilities. A surface retention pond had to be eliminated, requiring modification of the site drainage strategy. Crews relocated a portion of the campus’ primary communications duct banks including copper and fiber optics and a significant electrical distribution artery. Relocation of major storm lines, construction of underground detention piping and addition of a lift station were also required. Domestic and industrial cooling water distribution pipe networks that were being used for experiments throughout the campus had to be rerouted. Cryogenic piping systems were relocated in trenches to allow vehicle traffic to pass over. The highly detailed work was completed with zero utility strikes during excavation and zero unplanned disruptions to Fermilab infrastructure.

The Mortenson team worked with Perkins & Will, Arup and Terra Engineering to deliver the project on time and on budget.