This is what i have on the layout it's compatible with FasTrack so I don't think I need 1 10" MTH tracks
The Fully assembled and ready-to-install, M.T.H. RailKing RealTrax bridges are a great way to expand your O Gauge model railroad. Fully painted and compatible with any O Gauge track system, including Lionel FasTrack®, RealTrax bridges look great and are sturdy enough for even the heaviest of trains.