Not on Google Maps, apparently. “US Route XX in Illinois” has been applied to every US route in the country that passes through Illinois, from US 41 in southern Florida to US 20 through Iowa. And besides, even in Illinois the typical term is “highway” not “route”.
That’s a closeup of the I-380/US 20/US 218 interchange, BTW.
But wait, there’s more! While composing this post, I found this near West Liberty:
Seriously, Google, what’s going on here?