A paving project on Interstate 283 in Dauphin County, being done in conjunction with a $800 million plan to improve Interstate 83, is slated to start Sunday.

The $5.6 million project on I-283 includes patching concrete and paving the highway between the turnpike and the Eisenhower Interchange, according to the state Department of Transportation.

The project is the first step to taking on a long list of I-83 improvements that are funded by the state's comprehensive transportation plan, signed into law in November, PennDOT said.

Improvements to I-83 include widening and constructing the highway between Union Deposit Road and I-81, reconstructing the Eisenhower Interchange and widening it between the Eisenhower Interchange and the John Harris Memorial Bridge over the Susquehanna River, PennDOT said.

The I-283 project, awarded to Pennsy Supply, will occur between 9 p.m. and 6 a.m. and includes periodic short-term lane closures. The project is to be finished in May 2015, PennDOT said.