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Illinois Department of Transportation (IDOT) (Illinois)

Last Updated: October 19, 2023, 9:47 am

IDOT and the ISP number the lanes left to right, "L1" is the far left lane.

IDOT Wiki Page
Also see the State of Illinois Wiki Page 

Category Report

Frequencies

Illinois Department of Transportation (IDOT)

Statewide
STARCOM21 Statewide Illinois
Project 25 Phase II		Local and area wide-communications. UHF Portables may still be used on-scene for construction or incidents. (see wiki)
District 1 - Schaumburg (Chicago Metro Area)

Cook, DuPage, Kane, Lake, McHenry, and Will Counties 

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations. Talkgroups in the 1400s and 33800s.
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
150.995KZZ494 RM 131.8 PL IDOT 1C Maint Central Maintenance - Cook / DuPage [Ch 1/11] FMN Public Works
151.070KTN369 RM 131.8 PL IDOT 1S Maint South Maintenance - South Cook and Will [Ch 2/12] FMN Public Works
151.100KTN369 RM 023 DPL IDOT 1N Maint North Maintenance - North Cook, Lake & McHenry [Ch 3/13] FMN Public Works
154.665KA5825 M 131.8 PL IDOT SpecProj Special Projects [Ch 5] FMN Public Works
453.150WNDL390 RM 151 NAC IDOT D1 ETP B/Up Emergency Traffic Patrol - Back-Up [TG 1] P25 Public Works
453.1875WQPX733 RM 151 NAC IDOT D1 South South - Primary P25 Public Works
453.200WQPX736 RM 151 NAC IDOT D1 NrthEast Northeast - Primary P25 Public Works
453.2375WQPX734 RM 151 NAC IDOT D1 Central Central - Primary P25 Public Works
453.300KR5616 ?? BM 151 NAC IDOT D1 Exprsswy Expressways - Primary P25 Public Works
453.400WPBZ422 BM 151 NAC IDOT D1 KaneCo Kane County - Primary P25 Public Works
453.4875WQPX735 RM 151 NAC IDOT D1 McHenry McHenry County - Primary [*see note 10/13] P25 Public Works
453.700KQO359 RM 151 NAC IDOT D1 Admin Admin - Primary P25 Public Works
453.250KNFB431 RM 151.4 PL IDOT1 Kennedy [Old ?] Kennedy Reversible Lanes - Data [Ch 5] FMN Data
453.150WNDL390 RM 151.4 PL IDOT1 Traffic [Old] Traffic / Executive Personnel, Cook County Sign Shops [Ch 6] FMN Public Works
453.200KNFB429 RM 151.4 PL IDOT1 Backup [Old] Back-up Repeater / Portables [Ch 9] FMN Public Works
453.300KR5616 RM 151.4 PL IDOT1 EM Yard [Old] Expressway Maintenance Yards: Cook (except I-57, Bishop Ford & 394) [Ch 7] FMN Public Works
453.400WPBZ422 RM 151.4 PL IDOT1 W Maint [Old] Kane County - West Maintenance [Ch 8] FMN Public Works
453.700KQO359 RM 151.4 PL IDOT1 ETP Adm [Old] ETP - Admin / Backup (Old ETP) FMN Public Works
District 2 - Dixon

Bureau, Carroll, Lee, Ogle, Rock Island, Henry and Whiteside Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operation
District 3 - Ottawa

Kendall, LaSalle, Livingston, Mercer Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.875KR5616 M 127.3 PL IDOT D3 Traffic Traffic Control FMN Public Works
District 4 - Peoria

Fulton, Henderson, Knox, McDonough, Marshall, Mercer, Peoria, Putnam, Stark, Tazewell, Warren, Woodford Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations (as of June 2013)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.3625WPGA913 M 110.9 PL IDOT D4 Portable Road Construction Crews (Lane Closures/Portables) FMN Public Works
District 5 - Paris

Champaign, DeWitt, Douglas, Edgar, McLean, Piatt, Vermilion Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations (as of 12/12)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.3625 M 110.9 PL IDOT D5 Portable Road Construction Crews (Lane Closures/Portables) (BMI area) FMN Public Works
453.5125KR5616 M 110.9 PL IDOT D5 Survey Road Construction: Survey Crews (Rantoul area) FMN Public Works
District 6 - Springfield

Adams, Brown, Cass, Christian, Hancock, Logan, Macoupin, Mason, Menard, Montgomery, Morgan, Pike, Sangamon, Schuyler, Scott Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Primary communications (as of 12/16/13)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
955.550KJW21 F IDOT D6 MW Microwave Link (CSQ; heard by D9 HQ) Telm Data
453.3625WPGA913 M 110.9 PL IDOT D6 Spfld Road Construction Crews (Lane Closures) [Spfld area] FMN Public Works
458.7125WPGA913 M 110.9 PL IDOT D6 Pitts Road Construction Crews (Lane Closures) [Pittsfield, Spfld] FMN Public Works
District 7 - Effingham

Clark, Clay, Coles, Crawford, Cumberland, Edwards, Effingham, Fayette, Jasper, Lawrence, Macon, Moultrie, Richland, Shelby, Wabash, Wayne Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations (as of 1/14)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.5125KR5616 M 110.9 PL IDOT D7 Trfc DOT Traffic Control (handheld radios) FMN Public Works
453.3625 M 110.9 PL IDOT D7*Trfc DOT Traffic Control (handheld radios) (or 453.2625?) FMN Public Works
District 8 - Fairview Heights

Bond, Calhoun, Clinton, Greene, Jersey, Madison, Marion, Monroe, Randolph, St. Clair, Washington Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		EPV (Emergency Patrol Vehicles), Admin and Water Level units (?) use TGs 7776 - 7781 All other operations (as of 10/13)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.025KR5616 M 110.9 PL IDOT D8 MX Mobile Extender FMN Public Works
453.025KR5616 M 110.9 PL IDOT D8 RC-1 Road Construction FMN Public Works
453.7125WPGA913 M 127.3 PL IDOT D8 RC-2 Road Construction Crews FMN Public Works
453.3625WPGA913 M 110.9 PL IDOT D8 RC-3 Road Construction Crews (Lane Closures) FMN Public Works
District 9 - Carbondale

Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson, Johnson, Massac, Perry, Pope, Pulaski, Saline, Union, White, Williamson Counties

STARCOM21 Statewide Illinois
Project 25 Phase II		Most operations (as of 5/14)
FrequencyLicenseTypeToneAlpha TagDescriptionModeTag
453.875KR5616 M 110.9 PL IDOT D9 Road Road Sign Crews FMN Public Works
458.4625WNUE273 F IDOT D9 Data Data (West Frankfort) Telm Data