A trail that's been part of the Jefferson County community for the past 15 years is set to undergo another expansion. 

The expansion will add an additional mile, bringing the Black River Trail to 5.4 miles from beginning to end. 

80 percent the expansion will be paid for through the Transportation Alternatives Program.

The other 20 percent will be split between the city of Watertown and New York State Parks.

Officials also announced the Black River Trail will be expanding to Fort Drum.

The idea is still in the early stages, but officials will ebgin planning this weinter.