Updated on 5/21/25 @ 8:40 p.m. to add the above map.

County Trunk Highway-A (CTH-A) Pavement Rehabilitation Project
Construction Expected shortly after Memorial Day on CTH-A in the Town of Richmond

The Wisconsin Department of Transportation (WisDOT) will start a pavement rehabilitation project on County Trunk Highway A (CTH-A) from County Line Road (Rock County) and South County Trunk Highway P (CTH-P, Walworth County) in the Town of Richmond. This 5.8 mile project includes the following work:

• Replacement of most highway cross-culverts and driveway culverts
• Asphalt pavement removal / milling
• Construction of a new asphalt pavement surface and gravel shoulders
• Lane and shoulder widths will generally remain unchanged
  What to Expect
  Starting shortly after Memorial Day, CTH-A will be closed to through traffic from County Line
  Road (Rock County) to South CTH-P (Walworth County) but will remain open to local traffic,
  businesses and those utilizing the detour for the US12 project.
  
  A posted detour will utilize County Trunk Highway M (CTH-M, Rock County), USH-14/WIS
  11 (through City of Delavan), and County Trunk Highway-O (CTH-O, City/Town of Delavan).
  The detour will ensure that truck traffic and those who are unfamiliar with the area have a safe
  route around the work zone. WIS-89 and other area roads will remain open.
  Although open to local traffic, the road surface may vary during construction until paving. Local
  Residents are encouraged to seek alternate routes where available. Access will be maintained
  for emergency services, postal delivery, garbage collection and school buses.
  Watch for message sign boards for more specific information as it becomes available. The project
  is scheduled to be completed in late Summer 2025. All work is weather dependent.