Delaware River Viaduct

The Delaware River Viaduct, located in Columbia, New Jersey, is one of two viaducts along the Lackawanna Cut-Off, and spans the Delaware River between New Jersey and Pennsylvania. The bridge completed construction in 1910 and was one of the largest reinforced concrete bridges in the world. 

The bridge is longer than the Paulinskill Viaduct, however shorter in height and spans with 9 arches across the Delaware River.

The viaduct was originally designed to be curved, however this idea was scrapped and the Lackawanna decided to have a sharp curve immediately after the viaduct. This curve would be the sharpest along the Cut-Off, with trains being restricted to 50 MPH.

The tracks on the viaduct were removed later than the rest of the Cut-Off, which happened in March of 1989, compared to the rest of the Cut-Off which was removed in 1984. 

On the New Jersey side of the viaduct, Interstate 80 crosses under the viaduct, while on the Pennsylvania side, the Lackawanna Old Road crosses directly beneath it. 

The bridge is owned by the Pennsylvania Northeast Railroad Authority (rather than NJDOT) and is planned to be restored for when Amtrak's plans come to fruition.