CSX CorporationHoward Street Tunnel upgrade enables double-stack trains, increasing freight capacity and network productivity.

CSX and the Port of Baltimore have launched double-stack rail service through the upgraded Howard Street Tunnel, a 131-year-old corridor whose increased clearance now allows double-stacked container trains and greater freight capacity. The long-planned infrastructure upgrade is expected to enhance supply chain efficiency for East Coast shippers and support regional economic development, while potentially improving CSX's network productivity and emissions profile. The launch directly addresses a key prior risk around infrastructure execution, though near-term attention will focus on whether network changes such as the Barr Yard restructuring create service challenges that offset efficiency gains. CSX's upcoming Q2 2026 earnings release on July 22 is expected to offer fresh color on how recent operational moves are flowing through to volumes, costs, and service metrics. The company's narrative projects $16.2 billion revenue and $4.2 billion earnings by 2029, requiring 4.6% yearly revenue growth and a $1.2 billion earnings increase from $3.0 billion today.
CSX CorporationHoward Street Tunnel upgrade enables double-stack trains, increasing freight capacity and network productivity.