Talk:U.S. Route 20 in Iowa
{{Talkheader}}
{{WikiProject banner shell|class=C|
{{WikiProject U.S. Roads|class=C|importance=Mid|type=US|state=IA|needs-jctint=no|needs-map=no|photo=Iowa}}
}}
Green and Gray routes
Can someone explain what the green an gray routes are? NintendoTTTEfan2005 (talk) 18:51, 30 October 2023 (UTC)