Here is a Gargraves Accessory Terminal Control Section with Phantom Tinplate rails

this design is constructed of several steel sections riveted together to form girders

This is a Plastruct 90221 3/16 x 1/4 x 15 ABS Rectangular Tubing (Pack of 6)

Model Number: 949-714

Separately applied builder's plates

Micro Engineering 75-514 HO 150' Long Standard Tall Steel Viaduct Bridge Kit ProductID_11570927 Here is a Gargraves AccessoryThis is a Micro Engineering 75 514 HO Scale 150' Long Standard Steel Bridge Kit with 2 70' Tall Tower Bents. Tall steel viaduct bridges are some of the most spectacular and interesting types of bridges. They are used by railroads to span wide and or steep valleys, often replacing wooden trestles. These HO and HOn3 Tall Steel Viaducts are available in three base kits, three length extension kits, a height extension kit which adds a 4th and 5th story,