Connecticut Route 37A

Route 37A no longer exists. In 1934, it was created in New Fairfield and Danbury, inheriting most of its route from the short-lived Route 100. The alignment of Route 37A, 8.52 miles long, from south to north:

Today's Route 39, from Route 37 in Danbury to Warwick Road in New Fairfield
Warwick Road, continuing to Pembroke Road (Route 37)

The section of Ball Pond Road between Milltown Road and Warwick Road was an overlap with the comtemprary Route 39.

On Mar. 29, 1963, Route 39 was relocated from Milltown Road to its modern routing into Danbury. Warwick road was turned over to the town, and Route 37A disappeared.

CT 37A Sources

Connecticut State Highway Department. Routes and Road Numbers on the State Highway System, Showing Control Numbers and Sections. Dated Jan. 1, 1942.
"Roads to get new numbers." Bridgeport Post, Feb. 28, 1963
Connecticut Department of Transportation. "Route change table.xls". Microsoft Excel spreadsheet file, received April 4, 2008.