1:48 O-SCALE
Cast Resin

One section of the Animas River bridges in Durango CO is a through plate girder bridge. It is a main-line
size span about 80' long that carries the tracks right into the
452a through truss. The Durango and
Silverton runs their trains daily over this bridge.

I wanted to offer a simple to build kit that is fully detailed and is useful for many modelers. This typical
through girder will hold standard-gauge equipment as well as the large narrow gauge locos that use it
regularly. It will assemble with ACC (super glue) adhesive.

The 3D files were made into printed master parts. I made the RTV molds and cast parts for the model.
The model has styrene I-beams for stringers and 3D printed clevises for the brass brace rods.
Durango Through Plate
I MADE QUITE A FEW OF THESE. It was a nice kit when built
and the easiest to build of them all. Thanks!

John Palecki

copyright by John Palecki    page update 5/6/2018

The instructions have a small error on kits shipped
before 12/22/17.
On the page Section 4: Bracing Rods 1 (page 23) I
transposed numbers for the lengths of the brace rods.
Mid panels- Instead of 2.430" it should be
End panels- Instead of 2.410" it should be

They are K&S 8160 .032" brass rods. Local hobby
shops should have them as do some hardware stores.
If you need some and you would like me to send you
them just send an email.

This end view shows how the bridge
looks with detailed track.
The side view demonstrates the correct proportions of this typical
girder bridge. The model is 15-5/8" long and 4-3/8" wide.
Looking down into the bridge reveals the
sway brace rods, rod clevises and the detail
of the floor beam connections. There are
numerous layers of plates piled up on the
prototype. They are all here in 1:48.
This photo is of my completed model with 3' gauge track I made. It went together nicely as shown.
The floor beams are one-piece castings. They glue on to indexed location on the girders. The
girders are two parts with the top and bottom plates running across the joint for strength. The
stringers are Evergreen Styrene I-beams, and there are brass rods for the lower sway rods with 3D
printed clevises. It makes for an accurate model of a through girder bridge. It has that look of being
correct. I made sure the rivets are in logical locations on both sides of connections.
I like rivets, especially when they are in
the correct locations.
Here is the bridge in black undercoat before I went
crazy with the weathering on silver overcoat..
I performed a load test of my very first model. It uses castings that are thinner-walled
(less stiff) than the production version. I placed a contact pad on the middle three floor
beams so the weight would be concentrated in the middle- no cheating having weight
over the ends. The bucket contains sand. I stopped adding sand when there was
enough in there that I didn't want to clean up in the case of failure. The platform
weighed 10 lb. The needle is at 30 lb.
The bridge held 20 lb concentrated in the
middle! It is all resin castings and styrene I-beam stringers.
These little fellas are 3D printed clevises for the brace
rods on the bottom. They are included in the kit.
The unpainted completed bridge shows the parts- black
are the castings, white are the styrene I-beams and brass
are the brace rods. The small clevises are visible too.
The bottom of the bridge has nice detail including the
brace rods.
1:48 Durango Girder Bridge Instructions