Traffic Signals

County Maintained Signals

The County Highway Department currently maintains the following traffic signals:

  • Arena Parkway at North Family Arena Entrance
  • Arena Parkway-South River Road at Friedens Road
  • Arena Parkway at South Family Arena Entrance/South River Road
  • Barathaven Boulevard at Ripararian Drive (Pedestrian Flasher)
  • Barathaven Boulevard at St. Madelene Drive (Pedestrian Flasher)
  • Birdie Hills Road at Knaust Road
  • Blossom Bay Court at Weiss Road (Pedestrian Flasher)
  • Central School Road at Highfield Drive
  • Cottleville Parkway at St. Charles Community College (SCC) Southeast Entrance
  • Cottleville Parkway at St. Charles Community College Southwest/ Loft Entrances
  • Cottleville Parkway at Knaust Road/Weiss Road
  • Country Ridge Drive and Brittany Cove Drive at Route N
  • Crossroad School at Route N
  • Cottleville Campus at Route N (Flashing yellow at speed zone)
  • Cottleville Campus at Route N 
  • Dingledine Road (Yellow Flasher)
  • Duello Road (Yellow Flasher)
  • Feise Road at Hanley Road
  • Feise Road west of Hanley Road (School Crossing Flasher)
  • Greens Bottom Road at Katy Trail (Yellow Flasher)
  • Gutermuth Road at O'Fallon Road
  • Hanley and Post Roads at Route N
  • Jungs Station Road at Katy Trail (Yellow Flasher)
  • Jungs Station Road at Upper Bottom Road
  • Knaust Road at Laura Hill Road
  • McClay Road at St. Peters-Howell Road
  • Merz Farm Lane and Dardennne Town Square at Route N
  • Motherhead Road at Route N
  • O’Fallon Road at Francis Howell Middle School (School Speed Zone Flasher)
  • Old Upper Bottom Road at Upper Bottom Road
  • Route 94 South at 3rd Street (Pedestrian Flasher)
  • Route 94 South at Defiance Road/Darst Bottom Road (Pedestrian Flasher)
  • St. Peters-Howell Road at Toelle Drive
All other signals in St. Charles County are operated and maintained by the respective cities or the Missouri Department of Transportation.

How to Report an Issue

Should you encounter a problem at one of the county's signals, please contact us at 636-949-7305 or fill out an online Report Maintenance Issues form.