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Bridges of Metro-North: The Harlem River Lift Bridge

Throughout the entire Metro-North system there are an array of movable bridges – bridges which as of recently seem to be a thorn in the rail system’s side. Much of the infrastructure on these bridges are old and prone to issues. Thankfully, updates are going on to get these bridges in better working order, and we’ll be taking visits to some of the more prominent bridges in the system in the next few weeks.

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.

Previous railroad bridge over the Harlem River
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.

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The aftermath of Sandy on Metro-North, in one photo

Yes, this is the Hudson Line. Ossining, in fact. Metro-North service is still suspended, with no timetable for restoring service. Similar to Irene, the MTA has been keeping everyone apprised of what has been going on through their Flickr account. Some truly astonishing stuff. I couldn’t help poke fun at that one photo, however. Hopefully there will be service restoration soon, Metro-North is out surveying the damage, and hopefully not finding any more boats on the tracks…

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