State transportation officials on Thursday announced a project to prevent wrong-way crashes on state roads and highways in Northeastern Pennsylvania.

The $778,000 safety and wrong-way crash improvement project will add additional signing on off-ramps and upgrade the reflectivity of current signs, according to the Pennsylvania Department of Transportation.

The work will start in early July on interstates 80, 81, 84 and the Casey Highway, PennDOT said in a news release.

The project also includes high friction surface treatments on 3,701 square yards of Route 309 in Luzerne County, PennDOT said.

The project is expected to be completed by September.

At least five wrong-way crashes have been reported in the past year on I-81 in Luzerne, Lackawanna and Susquehanna counties. Several of the crashes resulted in multiple fatalities.