Re: Missouri's 50th anniversary of the interstate system site is up

Mukade wrote:
Illinois has a practice of using minor or intermediate control cities on
signs at most interchanges, but major highways use the standard major
control cities. For example, where I-57 begins at I-94, the control city is
Memphis (TN). However, going south, you instead would see Champaign,
Effingham, Mt. Vernon, and Sikeston at most interchanges other than
Interstates.

IDOT used to use Cairo starting at Mt. Vernon. Did they change it to
Sikeston?


So in the case of I-24 "westbound", most (US 45 might be the exception)
interchange control city signs do indeed say "NORTH Interstate 57".
Nonetheless, I think the major control city is actually St. Louis. One thing
that supports that is that where I-24 meets I-57 a large overhead sign says
something like "To St. Louis USE I-57 NORTH".

I personally don't care for the two tier system, but many people like it.

MODOT seems to use this system also, as the control city for SB I-55 at
US 50-67-67 and the I-270/255 interchange is Memphis, but a few miles
south the control city changes to Cape Girardeau. It seems to be even
worse for NB I-55, as Perryville is used on entrance signs for a
interchanges near Cape.

There are some places MODOT even seems to use a third tier of control
cities in lowly populated areas. IIRC, some of the signs for NB I-55
use "Rte 32" and some for SB I-55 use Brewer in Northern Perry/Southern
Ste. Gen counties.

.

Relevant Pages

  • Re: Missouris 50th anniversary of the interstate system site is up
    ... For example, where I-57 begins at I-94, the control city ... and Sikeston at most interchanges other than ... interchange control city signs do indeed say "NORTH Interstate 57". ... cities in lowly populated areas. ...
    (misc.transport.road)
  • Re: Inspired by the recent signage threads ...
    ... where control cities are concerned, but only at service interchanges. ... Where I-90 EB splits off the OH turnpike, ... The I-80 through control city ...
    (misc.transport.road)
  • Re: New Mexico highway stuff
    ... and other odd choices for control cities on major interstate ... routes with huge numbers of cross-country travelers. ... my favorite I-10 control city is "Other Desert Cities." ...
    (misc.transport.road)