090131082 Spring-frog switch on BNSF St. Croix Sub.         
Date: 1/31/2009 Location: Bay City, WI   Map Show Bay City on a rail map Views: 1573 Collection Of:   The Slidebroker image by John Hill
Author:  John Hill
090131082 Spring-frog switch on BNSF St. Croix Sub.
Picture Categories: Track This picture is part of album:  2009 Outstate Minnesota
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User Comments
Name Type Comments Date
Kenny Ravenscroft General Is that supposed to make a smoother ride over the frog? 2/2/2009 3:40:08 PM
The Slidebroker image by John Hill General That's basically the intent. Eliminating the frog gap reduces impact vibration and wear on the rail surface. Not universally popular because wear cost savings offset by the expense of the added hardware. 2/3/2009 12:30:55 PM

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