The drive through Lancaster County in southeastern Pennsylvania is a pretty one. Rows of corn stocks line backroads under picturesque blue skies. This is farmland.

It’s also home to the second-largest Amish community in the U.S. But to the appreciative executives, contractors and workers finishing up the Atlantic Sunrise pipeline extension, it’s also known as Spread 7, an important link in the much-anticipated project that has been four years in the making.