Cook County rarely use markers on its roads. Lake Cook Road, one of the busier roads in the northern part of the county (On the Lake-Cook county line if you haven't figured it out), went thru several upgrades over the last 2 decades. In the late 1970's it was extended from Milwaukee Avenue (IL-21/US-45) west thru Buffalo Grove to the existing part west of Rand Road (US-12). A big project within this expansion was the bridging of a wetlands west of IL-53. Several signs were posted on the road itself, but seem to have disappeared over the years.

A trip on Lake Cook Road on 3-24-99 showed no markers at all on the road itself, several cross streets have indicators. Lake-Cook Road is County Route A-50, following the NACA (North American County Association) standard.

	This sign is on Riverwoods Road. Note the absence of the county name.
	At Portwine Road.
	At Weiland Road in Buffalo Grove. This sign is actually in Lake County, as is Lake-Cook Road at this point. The county line is about 200 feet south of the roadway, and there is an "End" Lake County W-17" marker at the county line. (See below)
	To demonstrate how far north of the county line Lake Cook Road the "End" Lake County W-17 is circled in the below shot, and a close-up is above.
	Several Lake County routes are marked with signs like the above showing that while it is a county road, the maintanence is handled by Buffalo Grove. Vernon Hills also has similar markers.
	Cement "Right Of Way" posts on Lake Cook Road near Riverwoods Road in Riverwoods.
	At the same corner, but on a different quadrant. Notice the "FPD" post behind the "ROW" post. This indicates the Cook County Forest Preserve District property line.
	Close up of the above "ROW" post.
	1933 bridge on Sheffer Road near Aurora. Below is the brass bridge plate for it.

Dubuque IA
	All above in or near East Dubuque IL
			Fulton IL

IL-136 is the second shortest numbered highway in Illinois. It runs for a shade over 3 miles, from the Mississippi River Bridge between Fulton IL and Clinton IA and the junction with US-30 just east of Fulton. This road was once Alternate US-30, and interestingly enough is now posted as Detour US-30 during a reconstruction project on the US-30 bridge a few miles south.

	Some one at IDOT likes geography. This sign is posted in front of a farm west of Morrison IL.
	Below, my GPS unit says they were right on.
	I use a Garmin GPS unit, as well as DeLorme Street Atlas for navigation on my many road trips.