E 400

Recovered in Good Condition on April 3, 2015 Previous recovery (December 1, 2002)

Spatial/elevation data

Coordinates	N 41.9631° W 75.583317°
Elevation	926.57 ft.
Location	Pennsylvania Susquehanna County Susquehanna Quad

Mark description

Type	Vertical Control Mark
Setting	Bridge Pier
Monumented	1982 by NGS
Description (NGS)	NGS Datasheet

Google Map View Full Map

Updated GPS coordinates have been submitted to NGS.

A report on the condition of this survey mark has been submitted to NGS, along with the following recovery note:

Recovered in good condition as described. Handheld GPS coordinates for the bench mark are 41 57 47.2(N) 075 34 59.9(W).

Narrative and photographs

I first recovered this mark over twelve years ago. Rich wasn’t with me that day, but he has been interested in seeing the mark and, of course, the viaduct! Dad had the idea to drive by today on our way to Bainbridge (and after having breakfast in Susquehanna). The stone viaduct is still in beautiful shape and quite an impressive landmark. Viaduct Street, which passes through one of the arches, was originally the Delaware & Hudson Railroad right-of-way, as is visible in the early 1900s postcard view. On this bleak, cold morning Rich was content to view the mark from the car as we passed slowly by, but I decided to get out and take a closer look. Meanwhile, Dad drove a little further to find a place where they could turn around safely, and then they returned to pick me up. The disk is still in good condition, although it has suffered slight corrosion.

The viaduct was the largest stone rail bridge in use during the mid 1800s.

The bridge is also a National Historic Civil Engineering Landmark.

This early 1900s postcard shows the Erie crossing on the viaduct over the D&H ROW (north end of the viaduct).