The Illinois Department of Transportation announced the following ramp closures, both scheduled to take effect April 1 and continue until the end of November.

The ramp from northbound I-155 to westbound I-74 will be closed. For a detour, take eastbound I-74 to Morton Avenue interchange; follow detour loops to westbound I-74; proceed westbound on I-74.

The ramp from westbound I-74 to southbound I-155 will be closed. For a detour, take westbound on I-74 to Exit 98 (Pinecrest Drive); follow detour loops to eastbound I-74; proceed eastbound on I-74; exit onto southbound I-155.

The ramp closures are necessary to reconstruct the I-74 and I-155 interchange, officials said.

The overall project is the complete reconstruction of I-74 from Pleasant Hill Road to Morton Avenue in Tazewell County.