Route 109 or Highway 109 can refer to multiple roads:
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 A109 road (England)
  A109 road (England)  U.S. Route 109 (former)
  U.S. Route 109 (former) Alabama State Route 109
  Alabama State Route 109  Arkansas Highway 109
  Arkansas Highway 109  California State Route 109
  California State Route 109  Colorado State Highway 109
  Colorado State Highway 109  Connecticut Route 109
  Connecticut Route 109  Florida State Road 109
  Florida State Road 109  Georgia State Route 109
  Georgia State Route 109  Illinois Route 109
  Illinois Route 109  Indiana State Road 109
  Indiana State Road 109  Iowa Highway 109
  Iowa Highway 109  Kentucky Route 109
  Kentucky Route 109  Louisiana Highway 109
  Louisiana Highway 109  Maine State Route 109
  Maine State Route 109  Maryland Route 109
  Maryland Route 109  Massachusetts Route 109
  Massachusetts Route 109  M-109 (Michigan highway)
  M-109 (Michigan highway)  Minnesota State Highway 109
  Minnesota State Highway 109  Missouri Route 109
  Missouri Route 109  Nebraska Highway 109
  Nebraska Highway 109  Nebraska State Spur 109 (former)
  Nebraska State Spur 109 (former) New Hampshire Route 109
  New Hampshire Route 109  New Jersey Route 109
  New Jersey Route 109  New Mexico State Road 109
  New Mexico State Road 109  New York State Route 109
  New York State Route 109  County Route 109 (Cortland County, New York)
  County Route 109 (Cortland County, New York)  County Route 109 (Erie County, New York)
  County Route 109 (Erie County, New York)  County Route 109 (Fulton County, New York)
  County Route 109 (Fulton County, New York)  County Route 109 (Madison County, New York)
  County Route 109 (Madison County, New York)  County Route 109 (Montgomery County, New York)
  County Route 109 (Montgomery County, New York)  County Route 109 (Onondaga County, New York)
  County Route 109 (Onondaga County, New York)  County Route 109 (Rockland County, New York)
  County Route 109 (Rockland County, New York)  County Route 109 (Sullivan County, New York)
  County Route 109 (Sullivan County, New York)  County Route 109 (Tompkins County, New York)
  County Route 109 (Tompkins County, New York)  North Carolina Highway 109
  North Carolina Highway 109  North Carolina Highway 109A (Thomasville) (former)
  North Carolina Highway 109A (Thomasville) (former) North Carolina Highway 109A (Troy) (former)
  North Carolina Highway 109A (Troy) (former) Ohio State Route 109
  Ohio State Route 109  Oklahoma State Highway 109
  Oklahoma State Highway 109  South Carolina Highway 109
  South Carolina Highway 109  South Dakota Highway 109
  South Dakota Highway 109  Tennessee State Route 109
  Tennessee State Route 109  Texas State Highway 109 (former)
  Texas State Highway 109 (former)  Utah State Route 109
  Utah State Route 109  Vermont Route 109
  Vermont Route 109  Virginia State Route 109
  Virginia State Route 109  Virginia State Route 109 (1923-1928) (former)
  Virginia State Route 109 (1923-1928) (former) Virginia State Route 109 (1928-1933) (former)
  Virginia State Route 109 (1928-1933) (former) Virginia State Route 109 (1933-1946) (former)
  Virginia State Route 109 (1933-1946) (former) Washington State Route 109
  Washington State Route 109  Wisconsin Highway 109
  Wisconsin Highway 109 | Preceded by 108 | Lists of highways 109 | Succeeded by 110 |