State Route 4 (
SR 4) was a a
state highway that was formed at least as early as 1919. ;Route description It began at the
Alabama state line, traveled to the east-southeast and intersected
SR 1 in
Rome. It then curved to the southeast and began its
concurrency with
US 41 and
SR 3 northwest of
Cartersville. It then ended its concurrency with
US 41 and
SR 3 by turning north-northeast towards
Fairmount. SR 4 then ended at
SR 2/
SR 53 in Fairmount. ;History By the end of 1921, SR 4 was extended southeast into the main part of Cartersville, on a
concurrency with SR 3 and headed north-northeast to an intersection with
SR 2/
SR 53 in
Fairmount. By the end of 1926, almost all of the Alabama–Rome segment, and the southern half of the 1921 extension, had a "sand clay or top soil" surface. In the vicinity of Rome, the highway had a "completed hard surface". About half of the Rome–Cartersville segment was under construction. The easternmost part of this segment, and nearly the entire SR 3 concurrency, had a "completed semi hard surface". By the end of 1929, the entire length of the original segment of SR 4 was redesignated as
SR 20, with
US 41W designated along the Rome–Cartersville segment.
US 41 was designated along the former SR 3 concurrency. The 1921 extension was redesignated as
SR 61.
SR 4 was reused on that same day as a redesignation of parts of
SR 15,
SR 17, and
SR 24. ;Major intersections ==State Route 7W==