Beginning in Autumn 2007, Kentucky Route 237 underwent a $19 Million rerouting and improvement that included widening the road to five lanes from Litton Lane south of Interstate 275 to Cardinal Way.

The improvement features two roundabouts (the second and third of their type in Northern Kentucky at the time).

One is located at Cardinal Drive, the other at Graves Road/Old North Bend Road.

Construction to widen the section known as Pleasant Valley Road continues near the intersection with US 42.

Construction of a SPUI interchange with KY 18 commenced with utility relocation in January, 2013.