Map of US highways 32, 36, 38, and families

US 36 is represented by the purple line beginning near Estes Park CO. Its current eastern terminus is in Uhrichsville OH; the red line east of there to Cadiz is the historic extent of US 36. Other historic routings are also shown in red, including the original west endpoint in Colby KS.

US 136 is the blue line from Indianapolis to Edison NE. Its historic route to St. Joseph MO is shown in red.

US 32 (historic) is the red line from Chicago to Council Bluffs IA.

(Note that neither US 32 nor US 38 crossed the Missouri River, and therefore didn't quite connect.)

US 38 (historic) is the red line from Omaha NE to Greeley CO.

US 138 is the blue line from Sterling CO to Big Springs NE.