Route 99, also known as the Woonsocket Industrial Highway, is a 2.9-mile-long (4.7 km) freeway in Providence County, Rhode Island, United States.

The freeway has one interchange in Manville, a village in Lincoln, before terminating at an at-grade intersection with Rhode Island Route 122 in Woonsocket.

[4][5] After the Sayles Hill Road interchange, Route 99 begins to head in a northeastern direction, passing to the west of the densely populated village of Manville and the St. James Cemetery.

The freeway passes over 2nd Avenue before entering the city of Woonsocket shortly before its northern terminus at a traffic signal with Route 122 (Mendon Road).

[5] The origins of Route 99 date back to 1959, when the Rhode Island Department of Public Works (RIDPW) began planning studies for a freeway linking I-95 in Pawtucket with the city of Woonsocket.

[6] The freeway was planned in addition to Route 146, the Louisquisset Expressway, to serve the cities and towns of northern Providence County.

[7] In 1971, RIDOT again began studies on a new freeway to Woonsocket, this time to connect the city's developing industrial parks to Route 146, I-295, and the rest of the Providence metropolitan area.

[8] RIDOT conducted further planning and environmental studies in the 1970s, proposing to construct the four-lane freeway with a dual carriageway and a 65-foot (20 m) landscaped median.