|Albert R Brecken posted|
Section of the Hell Gate Bridge that spanned the Easr River as viewed without the massive "portal" towers at each end of the span.
It was the longest steel-arch bridge in the world when built, and it "was named after the narrow channel of strong waters and dangerous rocks in the East River running underneath the structure (known as Hell Gate)." [parachute] "The Hell Gate Bridge would be the last NYC bridge to collapse if humans disappeared, taking at least a millennium to do so.... Built by the Pennsylvania Railroad between 1912 and 1917 for the purpose of connecting the Pennsylvania and New Haven railways, its 20,000 tons of steel spans 1,107 feet from the shore of Astoria to the Bronx's Ward Island." [gothamist]
I've seen both 1916 and 1917 for completion dates. This project finished in 1916, but evidently additional track work was needed before through trains could use this project:
The arch bridge, the two smaller bridges and the viaduct were completed in September 1916. On March 9, 1917, the first Pennsylvania Railroad train - the Federal Express service between Washington and Boston - went over the Hell Gate Bridge, completing the first uninterrupted rail service between the two cities. [nycroads]
|Library of Congress: HAER NY,31-NEYO,167--18|
|Library of Congress: HAER NY,31-NEYO,167--16|
It uses a design that is rare anywhere, but almost unheard of in North American, the inverted bowstring truss. It is a deck truss where the bottom chord takes on an arch-like shape.
The reason this unusual design was chosen was as unusual as the design itself: the engineer wanted to give a greater clearance for boats near the piers. This is odd because boats usually would want to pass under the bridge as far away from the piers as possible.I was able to manipulate a 3D Satellite image to capture much of the length of the structure. Historic Bridges estimates it to be 3.6 miles long based on a diagram of the East River Bridge Division of the New York Connecting Railroad.
THE HELL GATE BRIDGE TODAY: The Hell Gate Bridge, which today has the 17th longest main steel arch span in the world, continues to play a central role in rail transportation in the Northeast. Only three of the four tracks are used on the bridge. The two south tracks carry Amtrak Northeast Corridor trains, while the north inner track carries CSX and Norfolk Southern (the owners of the former Conrail routes) freight trains. The north outer track is no longer in operation. [nycroads]
Dave Frieder has an interesting collection of photos of this and other bridges in the New York area.