New road development affecting home prices

[Cody Hyman]

I own a house in Colorado Springs, co & heard from a friend on the zoning and planning commission that there will be a new road going in behind my house, with an easement and the potential for the city to buy my property further down the road. 

The question that I have is: who thinks this will RAISE the price of my property and who thinks this will DECREASE my property's value. 

And why do you feel that way?

My house is on 5 acres, so I can split a small part of my lot, build a new home & get fair market value for 2 homes rather than 1, right? Has anyone had experience with these topics? What was your outcome?