curved bridges

I am looking for a curved bridge other than a wooden trestle. Any help would be greatly appreciated.

Thanks
Chip

 

I am looking for the same thing!

I've seen them in several layouts... but I've always wondered if they were scratch made...

 

Of course, the bridge is constructed in short, straight sections and the track is curved. One of the easy ways to do this is to make a ballasted deck bridge. Once the bridge is finished, you just ballast the track like the rest of the layout. Here's a straight one. Simple to make curved.

 

Here's a picture:



You can see the single parts are straight, but the track is curved.

Wolfgang

 

I have a couple of curved trestles on my layout and I am in the process of building two for my club. Planning is the key part. As stated in the previous post, you make a curve with a series of straight segments. You have to miter the bridge sections to make it flow smoothly. If your bridge segments need to meet at a 10 degree angle, split the 10 degrees in half and take off 5 degrees from each of the bridge segments.

I am currently using Micro Engineering 50' deck girders but you could do the same with other types of bridges. RMC recently ran a series on bridges that might be worth reading.

David

 

A masonry bridge could be curved (ok, many, many "brick length" straight sections ), and have a ballasted deck.

Andrew

 

I'm going to chime in, what would be a "prototypical" way of doing a curved bridge?
I have a pair or tracks on a 28" radius crossing over another, and I need to bridge it somehow, or either scrap the bridge idea altogether and put a tunnel entrance there instead.
Any ideas?

 

FiremanChip, Is this what you are looking for?

Micro Engineering steel viaduct

It can be built for straight or curved track.

 

Hey Wolfgang,

Who's CB&Q Budd bilevel commuter coaches are those?

 

Kalmbach has a book called "Bridges and Trestles" that describes bridge types and helps you to make a realistic structure. Perhaps this has some ideas for you? You just have to conceptualize what you want.

 

I can only recommend this Kalmbach book "Bridges & Trestles". I've used it for my trestles as well. And it's very helpful. You can calculate from the prototype date down to your model size.

Wolfgang

 

Those cars are mine. So I can answer: they're from "Three Brothers Mfg". It was a kit.

Wolfgang

 

I just ended up making a tunnel entrance for the low track instead of the bridge idea.

 

Curved Bridge

A few years ago I used the Atlas Girder load for the sides of a curved bridge. Sheet styrene and structrual shapes were used for the deck. I made my own piers and abutments from 1X4 wood sealed and painted with a concrete colour. The decks were made first and cut and fitted to the piers The cork roadbed and track was glued to the decks and the Atlas girders used for the sides were glued to the decks. The curve radius was set to 28 inch.