Posts Tagged ‘Railroad Bridges’

March 14, 2014 · by David Gilbert · Bridges, Erector Sets, Pack, Charlie

Charlie writes: This 3-section bridge occupies a 14 foot shelf in my den. This photo shows the left side of it. I was not able to get all of it in one picture! The bridge is built to a scale of about 27 to 1 for Lionel Standard (2 1/8”) Gauge track, making it about 350 scale feet long. The trains in the picture are Lionel Standard Gauge trains of 1927-1941 vintage. The train in the bridge is a passenger train pulled by a Lionel 408E electric form loco. All of the trains you see in these photos are original and in running condition.

Here is the right-hand side of the bridge. As one can see from these photos, the bridge is built in three separate but contiguous sections which are screwed down to the shelf. The track can be electrified (I’ve run the big 408E back and forth a couple of times on it!). Each bridge section is equipped with red obstruction lights and the little house in the middle of the center section is also lighted. The model contains about 30 feet of wiring. The actual model is about 13 feet long overall and 8 1/2” (17 holes) wide. It contains 121 angle girders, most of them are 17 holes long. An earlier single-span version was built 10 1/2” (21 holes) wide for a two-track O gauge main line.

Here is a photo of the center section. Its design was inspired by another Erector bridge I saw in the Eli Whitney Museum in New Haven, CT several years ago. In this photo, the lighting and wiring have not been installed yet. Most of the construction details should be apparent in this and the next photo. Flat car trucks MV are used as gusset plates. The vertical angle girders on the sides are 17, 19, 21 and 25 holes long. A few of the diagonal girders C had to be shortened a bit to fit correctly. The whole bridge will require 121 angle girders, most of which are 17 holes or longer, 60 MV’s, 60 C girders and 60 flat plates MF.

The house is mounted on two previously re-painted base plates S that have been cut down to 17 holes long. The railings are axle rods attached with collars P37 and set screws, with thin No. 6 washers added under the heads to tighten them up. The access ladders (one on each side) are each made from two 41 hole strips J, sixteen 7/8” screws S62 and nuts as required, and attached with angle brackets CH.

Better DUCK or that 408E will run over you! This photo shows the construction of the bridge base. The track ties are centered and bolted to 17 hole angle girders as cross pieces. If you use Lionel or MTH track, you can do this with 6-32 bolts and nuts without “moving” any holes. The sides of the base are DP or other angle girders laid end to end and bolted to the ends of the cross pieces. MF flat plates form a catwalk on each side. Narrow perforated strips G join and strengthen the angle girders where they are abutted. Some track ties may have to be adjusted slightly so they are spaced an exact multiple of 1/2”. This method of construction is used in all three bridge sections. I strongly recommend the use of the THICK N-21 nuts – the thin ones will strip very easily. Also, avoid aluminum screws.

· by David Gilbert · Bridges, Erector Sets, O'Neill, Bob

Bob O’Neill’s Bridges

I was asked to do some model bridges for a St. Louis Science Center display. They only gave me about two foot square by six feet tall. I made two of the bridges from Erector stuff and added a few model RR bridges from my collection.

Bob O’Neill’s Railroad Bridge

Bob writes: This is my newly rebuilt type one bridge. I’m adding a double track deck with standard/wide gauge Gargraves track. I enjoyed a recent article about a standard gauge club back east. I hope to get something like that started here in St. Louis.

Bob O’Neill’s Type 1 Bridge

Bob writes: Here is my attempted to build the type one bridge from the early teens; the one with the boy sitting on top. I placed a 1931 Hudson on it to show its size. Over all it’s just a little over 9ft. I used the parts from two 1920 #10 sets and use it for a portable antique train display that I set up at the Museum of Transport here in St. Louis.

It will carry a four track “O” gage main line or a double track standard main or a one track LGB main. I used it for a standard gage dog bone as the top layer of a nine layer display 32ft by 18ft.

· by David Gilbert · Bridges, Erector Sets, Myers, Tom

Tom writes: This is a Railroad Bridge shown in the 1929 #10 manual.

It is in the section for models to be made with the B accessory set or #10 set with additional parts. The only major difference with my version is that the horizontal EX girders shown in the manual are not used. My reason was because I did not have enough EXs and they seem to be only aesthetic, not structural. They appear to be a veneer on top of the structure. The bridge as I made it is very stout due to all the trussed square girders and would support a substantial weight, though I have not tested its limit. At five feet long it uses a lot of parts: 56 Bs, 136 Cs, 28 EXs, 10 EYs, 92 Is (or substitute Hs for some Is), 10 MN plates, 8 BE, 28 AH, and many CHs. I used almost all the nuts I have and needed to buy more long 8-32 screws in 3/4 and 7/8 lengths.

· by David Gilbert · Bridges, Erector Sets, Klein, Bill

Bill makes generous use of Erector parts for bridges, supports, cars, lights etc. on his model railroad layout.

Bill Klein writes: The basket weave bridges are four feet long, five inches wide and nine inches tall. The track supports are holding up one elevated track and three bridges.