There are lots of interesting things near the East Portal which are out of the scope of this page.
Worker housing was in close proximity to the portal, as well as one of the
Alignment Towers, and the
Compressor building. As you can tell these things have their own page.
The Trestle over the Deerfield river is a very important piece of the East Portal puzzle. It brings the rail line over to the Rowe side (east side) where the
Hoosac Tunnel & Wilmington railroad went off to the north, and the mainline continued southward to the Hoosac Tunnel station about 1/2 mile away, and further on to all points east.