The entire city is going to use 10 x 40ft components for the streets, roads, and avenues and 15 x 40ft components for the highways.
I will upload the textures once they are finished. Curving these roads is quite difficult.
The roads are designed for North American cities.
I will make a texture pack for Japanese cities too.
Edit: here are the new roads,
https://3dwarehouse.sketchup.com/mod...6-faaaa904feef
Feel free to use them, i just made them because i was bored.