150' Through-Truss Bridge With Punch Plate Girders Kit HO Scale150' Through Truss Bridge With Punch Plate Girders Kit by Central Valley Models. Dimensions: 21" x 4 3 8" x 2 7 8" HO Scale Born of the Midwest, also from the early 1900s, is our highly functional HO scale Punch Plate Girder Bridge, that is a beauty to behold just like her sisters and she will look fabulous on any layout. The Punchplate girders included with this kit, can be purchased separately in a package of 5 for custom building many different