The Susquehanna River Rail Bridge is a two-track bridge located in the City of Havre de Grace in Harford County, MD, and the Town of Perryville in Cecil County, MD.

Built in 1906, the Susquehanna River Bridge is owned by Amtrak. It is used by Amtrak, the Maryland Area Regional Commuter (MARC) rail and Norfolk Southern Railway to carry passenger and freight trains across the Susquehanna River. As the longest moveable bridge on the NEC, the bridge is a critical link and will be replaced with new structures to maintain future rail services across the Susquehanna River. The project is proposed to provide future improvements to capacity, trip time and safety for commuter, freight and intercity passenger rail services on the NEC consistent with State and Amtrak plans. The proposed project will also improve the navigation channel for marine users.

The Maryland Department of Transportation Maryland Transit Authority (MDOT/MTA) received an award of $22 million through a cooperative agreement between the Federal Railroad Administration (FRA) and MDOT for the preliminary engineering and National Environmental Policy Act of 1969 (NEPA) phases of the Susquehanna River Rail Bridge Project. The NEPA/EA process was completed in May 2017 with the release of a Finding of No Significant Impact (FONSI). Preliminary Engineering (30%) has also been completed. In August 2022, the project received the award of $40 million grant for final design through an additional cooperative agreement between FRA, MDOT/MTA and Amtrak.

In December 2023, Amtrak awarded three contracts for the Susquehanna River Rail Bridge Replacement Program, selecting Flatiron/Herzog Joint Ventures as the Construction Manager at Risk contractor along with two additional contracts to AECOM and Fay Construction. 

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