Day 262/365 of Steel – Broadway Bridge

Opening of the third subway span of Broadway Bridge on 26 December 1960

Broadway Bridge for trains connecting Manhattan and Bronx in New York City
Fig 1: Broadway Bridge for trains connecting Manhattan and Bronx in New York City
Photo: Arnoldius

The Broadway Bridge is a vertical-lift bridge across the Harlem River Ship Canal in the borough of Manhattan in New York City. The bridge consists of two decks. The lower deck carries Broadway, which is designated as U.S. Route 9 at this location. The upper deck carries the New York City Subway’s IRT Broadway–Seventh Avenue Line.

Broadway Bridge
Fig 2: Broadway Bridge
Photo: © Nicolas Janberg / Structurae

The current bridge was constructed between 1957 and 1962 to replace the second span. It measures 170m long and contains a navigable channel of 93 m width. The bridge provides 41 m of vertical clearance when it is in the open position and 7.6 m of vertical clearance in the closed position.

Broadway Bridge
Fig 3: Broadway Bridge
Photo: © Nicolas Janberg / Structurae

The bridge is composed of two Warren trusses. The lift span is supported by the lift towers at each end, which rise 49 m above mean water. The lift span is suspended by two sets of 12 wire ropes at each corner.

Broadway Bridge
Fig 4: Broadway Bridge
Photo: © Nicolas Janberg / Structurae

Each rope is wrapped around counterweights on each end: at the top of each tower and on the span. The span can be lifted by one electrical drive in each tower. The tops of the lift towers were tapered to be flush with the top of the lift span.

Broadway Bridge
Fig 5: Broadway Bridge
Photo: © Nicolas Janberg / Structurae

About the Author:

Bruno Dursin – Managing Director at Believe in Steel. Bruno has more than 30 years of experience in promoting steel & steel solutions. His clients benefit from his extensive network within the building industry.

You May Also Like

Day 2/365 of Steel – Roy Hofheinz

Roy Hofheinz was born on the 10th of april 1912. As co-owner of HSA (Houston Sports Association) he was the driving force behind the construction of the famous Astrodome. The…
Read More

Day 19/365 of Steel – The Gherkin

On the 28th of April 2004, The Gherkin was officially inaugurated. Norman Foster (architect) and Ove Arup (engineering) created a true masterpiece in skyscraper engineering. The Gherkin is an example…
Read More

Day 29/365 of Steel – Menashe Kadishman

Menashe Kadishman (21/8/1932 – 8/5/2015) I discovered Kadishman’s work during our visit to the Jewish Museum in Berlin.The Memory Void, one of the symbolic spaces on the ground level of…
Read More