Illinois/Major roads: Difference between revisions Discussion View history

 
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Based off: [http://www.dot.il.gov/maps/fiveyear/fiveyrmaps.html Functional Classification Maps] from [http://www.dot.il.gov/maps.html IDOT Maps Page]
#REDIRECT [[Illinois#Major roads]]
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Based off: [http://www.idot.illinois.gov/transportation-system/Network-Overview/highway-system/maps Functional Classification Maps] from [http://www.idot.illinois.gov/index IDOT Home page]
 
Also [http://www.dot.illinois.gov/gettingaroundillinois/gai.htm?mt=fc Getting Around Illinois]has a functional class map that may be easier to pan around on.
== US Route and State Route Naming ==
 
*In July,2013, all US Hwy XXX have been changed to US-XXX.
 
*State Rte XXX is being changed to SR-XXX format.
*CR-XXX will be used where applicable. Most have a Primary Street name, so this would only apply to an Alternate Field entry.
 
=== FC cross reference ===
 
Refer to this chart to determine the road type of a given road based on the functional class.
 
To use this chart, first determine the functional class of a road, and whether it is a signed, numbered highway in a particular highway system.
 
Where the column for the road's highway system and the row for the road's functional class meet, you will find the proper road type for that particular road.
 
A number of examples are given below the chart.
 
 
<div style="font-size:smaller">
{| border="1" style="border-collapse:collapse; text-align:center"
|-
! scope="row" rowspan="2" colspan="2" |
! colspan="8" | <big>Highway Systems</big>
|-
! Interstate
! Interstate Business Loop/Spur
! US Hwy (incl. some [[http://en.wikipedia.org/wiki/special_routes%7Cspecial routes]])
! US Hwy BUS, SPUR, LOOP
! State Hwy (incl. some special routes)
! State Hwy BUS, SPUR{{ref label|a|a}}, LOOP
! County Route
! Locally-maintained
|-
|
| ''example''
| I-90 E
| I-55 Business
| US-12
| US-460 Business
| SR-22
| SR-400 Loop
| CR-15
| Robertson St
|-
! scope="row" rowspan="8" style="width:28px" | <big>F<br/>u<br/>n<br/>c<br/>t<br/>i<br/>o<br/>n<br/>a<br/>l<br/><br/>C<br/>l<br/>a<br/>s<br/>s</big><!-- Temp placeholder -->
| <span style="color:#ffffff;">'''<span style="background-color:#0066ff;">Interstate</span>'''</span>
| {{Freeway|Fw}}
| n/a
| n/a
| n/a
| n/a
| n/a
| n/a
| n/a
|-
| '''<span style="background-color:#cc6633;">Freeway</span>'''
| n/a
| {{Freeway|Fw}}
| {{Freeway|Fw}}
| {{Freeway|Fw}}
| {{Freeway|Fw}}
| {{Freeway|Fw}}
| {{Freeway|Fw}}
| {{Freeway|Fw}}
|-
| '''<span style="background-color:#cc6633;">Expressway</span>'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
|-
| '''<span style="background-color:#ff0000;">Other Principal Arterial</span>'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Major Highway|Major}}
|-
| '''<span style="background-color:#00ff00;">Minor Arterial</span>'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
|-
| '''<span style="background-color:#ff66cc;">Major Collector</span>'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Primary Street|PS}}
| {{Primary Street|PS}}
| {{Primary Street|PS}}
|-
| '''<span style="background-color:#ffff00;">Minor Collector</span>'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Primary Street|PS}}
| {{Primary Street|PS}}
| {{Primary Street|PS}}
|-
| '''Local/not mapped'''
| n/a
| {{Major Highway|Major}}
| {{Major Highway|Major}}
| {{Minor Highway|Minor}}
| {{Minor Highway|Minor}}
| {{Primary Street|PS}}
| {{Primary Street|PS}}
| {{Street}}
|}
 
{{note|a|a}} When a state highway "SPUR" route is used to connect a state highway with another state highway, a US highway, or an Interstate (i.e., when it is used as a connector/CONN route), use the first state highway column.
 
<br/>For example,
 
*An Interstate Business Loop classified as a Minor Arterial is a {{Major Highway}}.
*A US Highway classified as a Minor Arterial is a {{Major Highway}}.
*A US Highway Spur route classified as a Minor Arterial is a {{Minor Highway}}.
*A State Highway classified as an Other Freeway is a {{Freeway}}.
*A State Highway classified as a Collector is a {{Minor Highway}}.
*A County Route classified as a Minor Arterial is a {{Minor Highway}}.
*A County Route classified as a Collector is a {{Primary Street}}
*A locally-maintained road classified as an Other Principal Arterial is a {{Major Highway}}.
*A locally-maintained road classified as a Collector is a {{Primary Street}}.
 
 
 
{| border="1" style="border-collapse:collapse;margin: 1em auto 1em auto; text-align:center"
|-
| {{Freeway|Fw}}
| {{Freeway}}
|-
| {{Major Highway|Major}}
| {{Major Highway}}
|-
| {{Minor Highway|Minor}}
| {{Minor Highway}}
|-
| {{Primary Street|PS}}
| {{Primary Street}}
|-
| {{Street|Street}}
| {{Street}}
|}
</div>


== Freeways ==
== Freeways ==
These are interstates, highways, freeways, toll roads, and expressways that '''are multi-lane, divided roads with no stops''' (no traffic lights, exit and entrance from/to the road is through ramps). <br/>
{| border="1" width="100%"
! scope="col" width="60" bgcolor="skyblue"| Road
! scope="col" width="40" bgcolor="skyblue"| Dir
! scope="col" width="200" bgcolor="skyblue"| Northern/<br/>Western End
! scope="col" width="200" bgcolor="skyblue"| Southern/<br/>Eastern End
! scope="col" width="40" bgcolor="skyblue"| Toll Road?
! scope="col" width="500" bgcolor="skyblue"| Notes
|- align="center"
| I-24 || W/E || I-57<br>South of Marion || KY Border<br>Ohio River || N ||
|- align="center"
| I-39 || N/S || WI Border || I-55<br>Normal || N* || Tollway while joined with I-90 from Rockford to WI border.
|- align="center"
| I-55 || N/S || US 41 (Lake Shore Dr / Chicago) || MO Border<br>East St. Louis || N || Known as Stevenson Expressway within Cook County.
|- align="center"
| I-57 || N/S || I-94<br>Chicago || MO Border<br>Mississippi River || N ||
|- align="center"
| I-64 || W/E || MO Border<br>East St. Louis || IN Border<br>Wabash River || N ||
|- align="center"
| I-70 || W/E || MO Border<br>Mississippi River || IN Border || N ||
|- align="center"
| I-72 || W/E || MO Border<br>Mississippi River || I-57<br>Champaign || N ||
|- align="center"
| I-74 || W/E || IA Border<br>Mississippi River || IN Border || N ||
|- align="center"
| I-80 || W/E || IA Border || IN Border || N* || Tollway portion between I-94 at Thornton and I-294 near Hazel Crest. Tollway portion known as (part of) the Tri-State Tollway.
|- align="center"
| I-88 || W/E || IA Border || I-290/I-294 || Y* || Tollway from mile marker 44 (US-30) to eastern terminus. West of US-30 is a freeway.  Toll road portion is known as the Ronald Regan Memorial Tollway.
|- align="center"
| I-90 || W/E || WI Border || IN Border || Y* || Tollway from US-51 (WI Border) to east of O'Hare airport (near IL-171 / Cumberland Ave) and from south of Chicago to the IN border. Toll portion from WI border to Chicago area is known as the Jane Addams Memorial Tollway.  Freeway portion is known as the Kennedy Expressway north of downtown Chicago (I-290 junction) and Dan Ryan Expressway south of downtown Chicago (I-290 junction).  Southeast tollway portion is known as the Chicago Skyway to the IN border.
|- align="center"
| I-94 || W/E* || WI Border || IN Border || N* || Direction of travel in IL is mostly N/S but designation is W/E.  Tollway from Deerfield (I-294 junction) to US-41.  Tollway portion known as (part of) the Tri-State Tollway. Freeway portion known as the Edens Expressway until it joins I-90.
|- align="center"
| I-155 || N/S || I-74<br>Morton || I-55<br>Northwest of Lincoln || N ||
|- align="center"
| I-172 || N/S || US-24<br>North of Quincy || I-72<br>South of Quincy || N || Formerly called the Central Illinois Expressway
|- align="center"
| I-180 || N/S || I-80<br>Princeton || IL-26<br>Hennepin || N ||
|- align="center"
| I-190 || W/E || O'Hare International Airport<br>Chicago || I-90<br>Chicago || N ||
|- align="center"
| I-255 || N/S || MO Border<br>Mississippi River || I-270/IL-255<br>East of Alton || N ||
|- align="center"
| I-270 || W/E || MO Border<br>Mississippi River || I-70<br>Northwest of Troy || N ||
|- align="center"
| I-280 || W/E || IA Border<br>Mississippi River || I-74/I-80<br>Colona || N ||
|- align="center"
| I-290 || W/E || I-90<br>East of Schaumburg || I-90/94<br>Downtown Chicago || N || Known as the Eisenhower Expressway.
|- align="center"
| I-294 || N/S || I-94<br>near Lake-Cook County Line || I-80/IL-394<br>West of Lansing || Y || Known as (part of) the Tri-State Tollway.
|- align="center"
| I-355 || N/S || I-290<br>Itasca || I-80<br>New Lenox || Y || Known as the Veterans Memorial Tollway.
|- align="center"
| I-474 || W/E || I-74/IL-6<br>Peoria || I-74<br>East Peoria || N ||


|}
These are interstates, highways, freeways, toll roads, and expressways that '''are multi-lane, divided roads with no stops''' (no traffic lights, exit and entrance from/to the road is through ramps). All roads labeled <span style="color:#000080;">Interstate</span> on the IDOT Functional Class map. Some IDOT classified <span style="color:#daa520;">Freewway or Expressway</span> may fall in this catagory as well.


== Major Highway ==
== Major Highway ==
A big highway, usually 3+ lanes, with minimal stops – mostly exits and interchanges, but possibly with some intersections and junctions.  In [[Illinois]] these are designated as '''US Rte #''' or '''State Rte #'''. <br/>
{| border="1"
! scope="col" width="60" bgcolor="Scarlet"| Road
! scope="col" width="40" bgcolor="Scarlet"| Dir
! scope="col" width="200" bgcolor="Scarlet"| Northern/<br/>Western End
! scope="col" width="200" bgcolor="Scarlet"| Southern/<br/>Eastern End
! scope="col" width="500" bgcolor="Scarlet"| Notes
|- align="center"
| IL 83 || N/S || north of 31st St.<br/>(Oak Brook) || Archer Ave<br/>(Lemont) || Continues as Minor Hwy north to xxx
|}


== Minor Highways ==
'''Principal arterials'''&nbsp;are the primary routes for traveling throughout the country, from one city to another, over long distances. Many principal arterials are freeways or expressways, but many others are not.
Usually a narrower highway, 2 lanes or less, that has stops or traffic lights at almost every intersection, but is still a highway (minor US or state highway).  These roads are generally important thoroughfare that goes through several cities or towns.  In [[Illinois]] these are designated as '''US Rte #''' or '''State Rte #'''. <br/>
 
{| border="1"
As a nationwide system, the United States Numbered Highways, or&nbsp;'''U.S. Highways''', system provides a direct links between regions not served by the Interstate Highway System, and as alternatives to Interstate travel in the case of heavy traffic or incident.
! scope="col" width="60" bgcolor="Beige"| Road
 
! scope="col" width="40" bgcolor="Beige"| Dir
In Illinois, the Functional Classification is <span style="color:#ff0000;">Other Principal Arterial</span>.
! scope="col" width="200" bgcolor="Beige"| Northern/<br/>Western End
 
! scope="col" width="200" bgcolor="Beige"| Southern/<br/>Eastern End
== Minor Highways ==
! scope="col" width="500" bgcolor="Beige"| Notes
 
|- align="center"
'''Minor arterials'''&nbsp;(or&nbsp;'''other arterials''') are secondary routes for traveling between cities over moderately long distances. Minor or other arterials are classified in Waze as Minor Highways.
| IL 83 || N/S || Devon Ave<br>(Elk Grove Village) || 31st St<br>(Oak Brook) ||
|}


== Primary Street ==
<span style="font-family: arial; font-size: 17px; line-height: 24.764999389648438px;">In Illinois, these are numbered the&nbsp;</span>'''state highway system'''<span style="font-family: arial; font-size: 17px; line-height: 24.764999389648438px;">. Roads in these systems are designated and selected by the Illinois State Department of Transportation as part of statewide networks of important travel links between cities and communities of those states. These roads, while of lesser national importance, are nevertheless essential for travel within the state.</span>&nbsp;<span style="font-size:medium;"><span style="font-family:arial,helvetica,sans-serif;">In [[Illinois]] these are designated as <span style="color:#00ff00;">Minor Arterial</span>.</span></span>
These are major roads or boulevards in urban and suburban areas and have large amounts of use (such as xx). In less urban environments they are main thoroughfares in towns that are not US or state highways. <br/>
{| border="1" width="100%
! scope="col" width="60" bgcolor="Goldenrod"| Road
! scope="col" width="40" bgcolor="Goldenrod"| Dir
! scope="col" width="200" bgcolor="Goldenrod"| Northern/<br/>Western End
! scope="col" width="200" bgcolor="Goldenrod"| Southern/<br/>Eastern End
! scope="col" width="500" bgcolor="Goldenrod"| Notes
|- align="center"
| Boughton Rd || W/E || Naperville-Plainfield Rd<br/>(Bolingbrook) || Woodward Ave<br/>(Woodridge)|| Continues east as 87th St
|}


== To Be Categorized ==
== Primary Street ==
These roads still have to be put in their proper places above.
{| border="1"
! scope="col" width="60" bgcolor="#BFBFBF"| Road
! scope="col" width="40" bgcolor="#BFBFBF"| Dir
! scope="col" width="200" bgcolor="#BFBFBF"| Northern/<br/>Western End
! scope="col" width="200" bgcolor="#BFBFBF"| Southern/<br/>Eastern End
! scope="col" width="500" bgcolor="#BFBFBF"| Notes
|- align="center"
| US 6 || W/E || colspan="2" | IA-IN borders (Moline - Lansing) || Grand Army of the Republic Highway
|}


Collectors are roads used with medium-low traffic densities which are used to bring traffic from local streets to arterials and vice versa. Collectors are classified in Waze as Primary Streets. Some states designate county routes which are important for travel within a county. These routes serve important functions in a short-distance capacity. On the Illinois Functional Class map, these will be <span style="color:#ffa07a;">Major Collectors</span> and&nbsp;<span style="color:#ffcc00;">Minor Collectors</span>.


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[[Category:Illinois]]

Latest revision as of 00:44, 20 May 2016

US Route and State Route Naming

  • In July,2013, all US Hwy XXX have been changed to US-XXX.
  • State Rte XXX is being changed to SR-XXX format.
  • CR-XXX will be used where applicable. Most have a Primary Street name, so this would only apply to an Alternate Field entry.

FC cross reference

Refer to this chart to determine the road type of a given road based on the functional class.

To use this chart, first determine the functional class of a road, and whether it is a signed, numbered highway in a particular highway system.

Where the column for the road's highway system and the row for the road's functional class meet, you will find the proper road type for that particular road.

A number of examples are given below the chart.


Highway Systems
Interstate Interstate Business Loop/Spur US Hwy (incl. some [routes]) US Hwy BUS, SPUR, LOOP State Hwy (incl. some special routes) State Hwy BUS, SPUR[a], LOOP County Route Locally-maintained
example I-90 E I-55 Business US-12 US-460 Business SR-22 SR-400 Loop CR-15 Robertson St
F
u
n
c
t
i
o
n
a
l

C
l
a
s
s
Interstate  Fw  n/a n/a n/a n/a n/a n/a n/a
Freeway n/a  Fw   Fw   Fw   Fw   Fw   Fw   Fw 
Expressway n/a  Major   Major   Major   Major   Major   Major   Major 
Other Principal Arterial n/a  Major   Major   Major   Major   Major   Major   Major 
Minor Arterial n/a  Major   Major   Minor   Minor   Minor   Minor   Minor 
Major Collector n/a  Major   Major   Minor   Minor   PS   PS   PS 
Minor Collector n/a  Major   Major   Minor   Minor   PS   PS   PS 
Local/not mapped n/a  Major   Major   Minor   Minor   PS   PS   Street 

^a When a state highway "SPUR" route is used to connect a state highway with another state highway, a US highway, or an Interstate (i.e., when it is used as a connector/CONN route), use the first state highway column.


For example,

  • An Interstate Business Loop classified as a Minor Arterial is a  Major Highway .
  • A US Highway classified as a Minor Arterial is a  Major Highway .
  • A US Highway Spur route classified as a Minor Arterial is a  Minor Highway .
  • A State Highway classified as an Other Freeway is a  Freeway .
  • A State Highway classified as a Collector is a  Minor Highway .
  • A County Route classified as a Minor Arterial is a  Minor Highway .
  • A County Route classified as a Collector is a  Primary Street 
  • A locally-maintained road classified as an Other Principal Arterial is a  Major Highway .
  • A locally-maintained road classified as a Collector is a  Primary Street .


 Fw   Freeway 
 Major   Major Highway 
 Minor   Minor Highway 
 PS   Primary Street 
 Street   Street 

Freeways

These are interstates, highways, freeways, toll roads, and expressways that are multi-lane, divided roads with no stops (no traffic lights, exit and entrance from/to the road is through ramps). All roads labeled Interstate on the IDOT Functional Class map. Some IDOT classified Freewway or Expressway may fall in this catagory as well.

Major Highway

Principal arterials are the primary routes for traveling throughout the country, from one city to another, over long distances. Many principal arterials are freeways or expressways, but many others are not.

As a nationwide system, the United States Numbered Highways, or U.S. Highways, system provides a direct links between regions not served by the Interstate Highway System, and as alternatives to Interstate travel in the case of heavy traffic or incident.

In Illinois, the Functional Classification is Other Principal Arterial.

Minor Highways

Minor arterials (or other arterials) are secondary routes for traveling between cities over moderately long distances. Minor or other arterials are classified in Waze as Minor Highways.

In Illinois, these are numbered the state highway system. Roads in these systems are designated and selected by the Illinois State Department of Transportation as part of statewide networks of important travel links between cities and communities of those states. These roads, while of lesser national importance, are nevertheless essential for travel within the state. In Illinois these are designated as Minor Arterial.

Primary Street

Collectors are roads used with medium-low traffic densities which are used to bring traffic from local streets to arterials and vice versa. Collectors are classified in Waze as Primary Streets. Some states designate county routes which are important for travel within a county. These routes serve important functions in a short-distance capacity. On the Illinois Functional Class map, these will be Major Collectors and Minor Collectors.