Today we feature the busiest bridge on the entire system, the Harlem River Lift Bridge. At sixty years old the bridge is not nearly as old as the issue-plagued WALK bridge, but it by far sees the most action, carrying nearly 700 trains per day for all three East of Hudson Metro-North lines. Over the past few months work has been moving along on the bridge – installing new cables that lift the tracks over the river for passing boats, and putting in new wiring, power supplies, and electrical control systems. Below the bridge a circuit breaker room that flooded during Hurricane Sandy and is experienced corrosion will be replaced. Gone will be an old crank control, updated to today’s standards with modern computers. In total, the overhaul has a $47.2 million price tag.
The 1867 bridge over the Harlem River, note the construction of a temporary bridge to allow a new 1891 span to be constructed on the main line. Image from the December 1892 Scientific American.
Historically, several previous movable bridges stood at this very spot, carrying the New York Central over the Harlem River. The first bridge over the river was completed in 1841, and stood a mere eight feet over the water at high tide. Made of wood, that bridge was later updated with iron spans in 1867. Later, a four track swing bridge was built in 1891. This bridge connected with the new Park Avenue viaduct, raising the tracks above Harlem and allowing a higher crossing over the river.