Intersections from west to east:

US24 enters Illinois crossing the Mississippi River at Quincy

IL57 at Quincy

IL104 at Quincy

IL96 joins US24 east from the south for a short distance north of Quincy

IL96 leaves to the north

I-172/IL336 near Quincy

IL94 near Camp Point

IL99 joins from the north at Mt. Sterling

IL99 leaves to head south again at Mt. Sterling, just north of the northern end of IL107

IL103 near Ripley

US67 at Rushville

US136 and IL100 join from the east and south

(Now, as you travel east on US24, you are traveling west on US136, forming a "wrong-way multiplex;" you would also be going northbound on IL100)

US136 splits off to continue west

At Lewistown, IL97 joins from the north as IL100 leaves to head north along IL97

IL97 leaves to the south along IL78, and IL78 joins US24 east

IL78 leaves to head north

IL9 joins US24 east

It passes through these towns: Quincy, Paloma, Coatsburg, Camp Point, Clayton, Mount Sterling, Ripley, Rushville, Astoria, Summum, and Lewistown.