An Ameren Corp. subsidiary has won conditional approval to build a high-voltage power line across 95 miles in northeast Missouri.

The Missouri Public Service Commission approved the power line Wednesday, so long as the company gets consent from county commissions to cross roads. The project runs from Palmyra to the Iowa border, affecting Marion, Shelby, Knox, Adair and Schuyler counties.

Some property owners raised health concerns and claimed the power line would violate a 2014 Missouri constitutional amendment creating a right to farm by taking land out of production.

The PSC said health concerns are unfounded and the power poles would not significantly affect farming.

State regulators said the new power line could encourage the development of wind energy. It will connect to another power line heading eastward to Indiana.