Upcoming Ohio Department of Transportation projects in Columbiana County include:

State Route 170 highway lighting project in Calcutta: A project to install highway lighting along Calcutta’s State Route 170 business corridor. Traffic will be maintained with flaggers. The completion date is Sept. 30.

State Route 172 culvert replacement near Guilford Lake: Work will begin March 10 to prepare for a culvert replacement project located in the Guilford Lake region. Initial traffic impacts will be maintained with flaggers. However, the road will close for 21 days starting April 21. The detour during the closure period will be state Route 9 south to U.S. Route 30 east and reverse. The project completion date is Oct. 31.