Tenn. Code Ann. § 7-32-117

Where intersections of any street, avenue, or other highway are improved, the municipality shall pay one third (1/3) of the cost of the improvement, and the balance shall be assessed against the property of the street improved and the intersecting street or streets for one half (½) a block in all directions according to the frontage of the property; provided, that the cost to be assessed against railways having tracks within such intersections shall be deducted from the cost of such intersections to be paid by the municipality and property owners.