[1] The bridge carries the Northeast Corridor, the busiest rail line in the United States, both in terms of ridership and service frequency.

[2][3] It is operated by the Metro-North Railroad, successor to Conrail, Penn Central, and the New York, New Haven and Hartford Railroad, which erected it, and is owned by the Connecticut Department of Transportation.

[4] It is one of eight moveable bridges on the Northeast Corridor through Connecticut surveyed in one multiple property study in 1986.

[5] In November 2024, the Connecticut Department of Transportation was awarded a $6.4 million federal grant to "explore options for replacement" of the bridge.

[6] Media related to Mianus River Railroad Bridge at Wikimedia Commons