State Route 99 is part of Maine

Maine

Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

's system of numbered state highways. It runs 8.76 miles (14.1 km) from an intersection with State Route 9A in Kennebunk

Kennebunk, Maine

Kennebunk is a town in York County, Maine, United States. The population was 1,075 people at the 2000 census. Including Kennebunkport , the population totals 14,196 people...

 to an intersection with State Route 109 in Sanford

Sanford, Maine

Sanford is a town in York County, Maine, United States. The population was 20,798 in the 2010 census, the highest of the York County towns, and the 8th largest in the state. Situated on the Mousam River, Sanford includes the village of Springvale...

. The route is also known as Cat Mousam Road (in Kennebunk), Webber Hill Road, and Kennebunk Road (in Sanford). Route 99 also passes by Lloid G. Nedeau Memorial Park.