Roads are bugged so I can't create anything higher than gravel

I researched concrete roads, and the second icon in the roads menu is still grayed out, is also labeled gravel roads, and costs 0. I tried researching 4 lane roads to see if that would fix it, but it didn’t. The menu still looks the same.

hm, if you send me your save I can investigate.

main menu → settings → open saves folder
daniel@dionicsoftware.com