Mainstream is pleased to be partnered with the Harrison County Community Foundation to build and maintain approximately a 115 mile fiber optic ring. This ring will be the backbone to grow fiber optic broadband coverage throughout Harrison County. Please check back for project and map updates. All proposed routes are tentative and subject to change.


Red = Existing Fiber
Yellow = Mainstream internal expansion project
Blue = Proposed partnership expansion (subject to change)

Harrison County zone mapping
 

Expansion Zone Information

Zones currently in signup phase – Complete your signup and provide deposit so we can get fiber to you as soon as possible!

Southwind Estates

Flatwood East

Pinewood Trail

Heidelberg Rd

Corydon Ridge to Lanesville

62 East

Grange Hall Road NE

Flatwood Road