Does widening the road increase or decrease value of property?

[Lora Benard]

I am considering wholesaling 130+ acres of land on a main strip in Augusta GA.  30 acres is zoned C-4 and the other 100 is agricultural/residential with potential to build a subdivision, but want to make sure the value will go up and not down.  They are planning to widen the road that the property aligns.  

What would make this property appealing to a land developer/investor?  The commercial land has a business that has been around for over 50 years and the business with be included turn-key.