Old number for Coal Pit Hill Road in Danbury, when US 202 was routed along South Street and Main Street. In 1932, the road was numbered Route 58A. In 1935, it became US 202A. On May 1, 1974, when US 202 was relocated, it became unposted SR 842. On Nov. 23, 1982, Coal Pit Hill Road was turned over to the city.

Now only one US alternate route exists in the state: US 1A in Stonington.