True-Scale used to make wooden roadbed in 3 styles. PLain, meaning no ties, and it was available in only fixed radii and straight sections. The next one was the fixed radii, and straight sections, that had "ties" and "ties plates" cut in to the roadbed. The third atyle had ties cut into it, but also there were cuts partway across the roadbed, allowing you to shape and curve as you wished. Drawback was it was extremely fragile and could split on you. I don't know if it is still available from someone else as True-Scale has been OOB for many years.
I handlay my track, and I also can't get homasote here, unless I want to pay outrageous prices for it, as in almost $70.00 a sheet. I have found a substitute. It's called Insulated Sheathing. Its a fiberboard that comes 3 ways. Brown board, which has no coating on it at all. Blackboard, which has a black coating on one side. Then there's the sheathing that has the coating on all sides. This is a paint like coating to protect the board from water & such, as the board will come apart if exposed to the weather for a long time. Here that stuff is around $6.00 for a 4'x8' sheet. Its used as subsiding on homes. While it is very messy, (lots and lots of dust), It cuts easy on a table saw or with a circular saw. It is also easily cut with a utility knife. It is just a hair softer than homasote, but holds spikes extremely well. I cut out first 4" wide strips, and then take those strips and cut them in half, as they are 1/2" thick and just about all the commercial roadbeds are around 1/4" thickness. I will then then tilt the saw to a 45 to 60 degree angle and cut the "ballast" shape into it. This gives me 8' long straight sections. For curves, I cut partway across the roadbed, and this allows me to curve it as needed. I will admit that there is some sweat equity in it, but I would rather pay in sweat equity, than in cash for something I can do myself, and with a couple of hours work on the saw!
I also cut my own ties on the two table saws I have, a 10" and a 4", out of white knotless pine. For my layout I gues I've cut around 25-30,000. I still have another 4-5000 to cut.
I've used this on my past 3 layouts and