Facts 

Overview
Swing through truss bridge over the Connecticut River on the Connecticut Central Railroad in Middletown
Location
Middlesex County, Connecticut
Status
Closed to all traffic
History
Built 1910
Design
Swing Double-intersection Warren through truss
Dimensions
Total length: 1,180.2 ft.
Inventory numbers
CT 639 (Connecticut bridge number)
BH 12149 (Bridgehunter.com ID)
Inspection
Average daily traffic (as of 2000)
25,200

Sources 

Comments 

Connecticut Central Railroad Bridge
Posted September 5, 2007, by Howard Shubs (howard [at] shubs [dot] net)

If this is the bridge I think it is, just downstream from the Arrigoni Bridge, it's NOT open to traffic. On Wikipedia, it's known as http://en.wikipedia.org/wiki/Providence_%26_Worcester_railroad_bridge