Construction on the Brent Spence Bridge Corridor has started, beginning a $4.05-billion interstate reconstruction program centered on a new double-deck cable-stayed bridge over the Ohio River and a multiyear overhaul of one of the nation's busiest freight route between Cincinnati and Covington, Ky. Ohio Gov. Mike DeWine (R), Kentucky Gov. Andy Beshear (D), Sen. Mitch McConnell (R-Ky.) and Federal Highway Administration Administrator Sean McMaster joined state transportation officials May 8 at a groundbreaking ceremony near the existing crossing, marking the transition from enabling works to major construction activity. Federal transportation officials have long identified the I-71/I-75 crossing as one of the country's most significant truck bottlenecks, with more than $1 billion in freight moving through the corridor daily, according to the Ohio-Kentucky-Indiana Regional Council of Governments.…