Despite the first section opening in 1953, the Route 10 designation was not used until 1966, when the freeway south of Route 2 (Reservoir Avenue) opened. The 1953 section was the Olneyville Bypass (also known as the Dennis J. Roberts Expressway, now also applied to U.S. Route 6 west of the bypass). Construction began in 1950 on the bypass of the congested Olneyville neighborhood, which the east–west U.S. Route 6 and Route 14 passed through (on Westminster Street, Hartford Avenue and Plainfield Street). The bypass ran from Hartford Avenue west of Olneyville around the south and east sides of Olneyville, junctioning with Plainfield Street, Huntington Avenue, Westminster Street and Broadway, and ending at Harris Avenue northeast of Olneyville.