SoNo Switch Tower Museum in South Norwalk Connecticut is a free online Railroad Discussion Forum and Railroad Photo Gallery for railroaders, railfans, model railroaders and anyone else who is interested in railroads. We cover a wide variety of topics, including freight trains, passenger and commuter railroads, rail news and information, tourist railroads, railway museums and railroad history.

Steve McEvoy

New Member
This retired New Haven, Penn Central and Metro-North Railroad signal tower in South Norwalk, Connecticut once controlled the entire Norwalk area. Under the New Haven, it was called Signal Station (S.S.) 44, and was renamed Berk under Penn Central. I first visited the SoNo Switch Tower Museum in 2006, and have returned every year or two. I have never been bored during my visits and always learn something new. I even joined the Western Connecticut Chapter of the NRHS, which restored and operates this former railroad interlocking tower.

The signal tower overlooks Metro-North's New Haven Line that is part of Amtrak's Northeast Corridor, and is one of the best places to watch frequent trains passing by, including Amtrak’s high-speed Acela trains. Because of the curve and swing bridge immediately east of the tower, trains travel past the building no faster than 30 to 40 mph, which allows ample time for taking great photos.

The tour guides always give fascinating presentations and answer my many and never-ending questions.

They let me throw the levers to line trains on specific routes, to unlock and open the bridge, etc. The interlocking machine still requires that the levers be thrown in the exact proper sequences and that the switch and derail levers must be all properly positioned before a signal lever can be cleared, because the original mechanical locking is still operational. I found this amazing!

The tower also has a power board by which the tower operators controlled the electric propulsion power in the catenary above the tracks both east and west of the interlocking.

My recent visit this year was so enjoyable that I felt that I should make this post!

Steve McEvoy

New Member
Hello Bill. Yes, I have photos. I have no idea of how to submit and caption photos. How is it done? How many do you want?


Bill Anderson

Well-Known Member

Steve McEvoy

New Member
Here are a few photos:

SoNo Switch Tower Museum Viewed from Street
SoNo 1.jpg

Tower Interior Looking West at Levers, Model Board and Power Board
SoNo 2.jpg

Tower and Mechanical-Interlocking Pipeline while Still in Service
SoNo 3.jpg

Aerial View while Tower Still in Service
SoNo 4.jpg

Portion of Existing Model Board
SoNo 5.jpg

Former Tower Operators at Reunion
SoNo 6.jpg

Northbound Danbury Train Passing Tower Museum
SoNo 7.jpg
Last edited by a moderator:

Bill Anderson

Well-Known Member
Thanks for posting the photos. I used my power as a moderator to place a caption above the corresponding photo, which I think makes it easier to read. What do you think?

Steve McEvoy

New Member
The SoNo Switch Tower Museum and the WestConn Chapter NRHS asked me to post the scheduled open hours for the museum:

The SoNo Switch Tower Museum is open Saturdays & Sundays, Noon to 5 pm, from May through the end of October. They expect to be closed on Sunday October 7, 2018 because of a chapter event.

Unlike most other museums that restrict cameras, flash and/or video recorders, you can and should bring your cameras and take still photos and videos, with or without flash, while in the museum (any floor) or on adjacent public property.

Nothing herein is suggesting, encouraging or permitting the use of drones.

Steve McEvoy


New Member
A great feature at the museum is the mechanical interlocking machine. You can throw the "Armstrong" levers subject to the mechanical locking. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section. - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.

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