2D simple road system with curves and intersections

Hi, I am creating a top-down map travel system for my game and I need a way to create roads on the map that the player avatar/icon can then follow: - Create simple curved roads (nothing fancy, just colored lines), - Roads have waypoints and segments, to which I can attach custom properties. - Waypoints can have more than two segments (intersections) - Usable in 2D - Preferrably C# code

Can anyone recommend an asset or solution that would allow me to build what I've described? None of the splines assets I've been looking at offer support for road intersections and the "road creator" assets are just too large for what I am trying to achieve.

Thank you!