Maintenance Schedule

The Peoria County Highway Department utilizes seal coating and tilling to maintain Peoria County Highways. 

Current Seal Coating Schedule

Listed below is the current schedule for seal coating.  The schedule can be affected by weather and is subject to change. 

  • Seal coating will resume - Summer 2020


Motorists can expect fresh oil and loose gravel and are advised to seek an alternate route if possible. Motorists are urged to slow down while traveling through construction zones and should expect slower traffic patterns throughout these areas while sealcoating operations are underway.

Questions can be directed to the Peoria County Highway Department at (309) 697-6400.

Tilling Process

Tilling is a process of grinding and mixing the existing road surface and base. Additional gravel is then added to the existing material and all the materials are compacted and graded. The process takes several days and traffic is also used to help compact the gravel. Once the gravel is compacted, the road is graded one more time, and seal coating of the road occurs.

  • No tilling operations ongoing at this time.