The interchange provides Interstate access to West Jefferson, nearby Lake Darby, and Plain City via Madison County Route 7.

For the five miles (8.0 km) between London and West Jefferson, the route passes many farms and some houses.

At US 40, officially Main Street but also a part of the National Road, SR 142 and US 40 intersect at a skewed angle.

Both routes head under the aforementioned rail line and into the central business district of the village.

At Plain City-Georgesville Road (CR 7), SR 142 turns north and heads into an outer reach of West Jefferson.