The state Department of Transportation says Shell Chemical LP wants to relocate a state highway as part of its proposed plans to build a multibillion-dollar petrochemical plant on the site of a former zinc plant near Monaca.
PennDOT spokesman Dan Cessna says Shell would pay for the changes, which include moving a section of Route 18 in Beaver County about 950 feet farther from the Ohio River, and upgrading an interchange with Interstate 376.
Route 18 would be widened to six lanes to accommodate truck traffic during the plant’s construction, then changed back to four lanes afterward.
Shell spokeswoman Kimberly Windon says Shell notified PennDOT in July of its proposal to change the highway.
Shell has not formally committed to building the plant, but has extended an option on the Potter Township site and begun demolition there.