It is known as Riverwatch Parkway from just west of the county line to the northern part of downtown Augusta.

It travels to the southeast as part of Washington Road and crosses over Kiokee Creek on the Robert W. Pollard Bridge.

It then curves to the east and intersects SR 232 (Columbia Road) and the southern terminus of Ruth Street on the Evans–Martinez line.

At an intersection with the southern terminus of Old Evans Road, SR 232 splits off to the south-southeast onto Bobby Jones Expressway.

After curving to the east-southeast, SR 104 enters Richmond County and the city limits of Augusta.

The roadway travels to the northeast and curves back to the southeast, to an interchange with Interstate 20 (I-20; Carl Sanders Highway).

After curving around the eastern side of Eisenhower Park, the highway begins paralleling the Savannah River, before it crosses over the Augusta Canal on the William "Billy" L. Powell Jr. Bridge.

[11][12] By the end of the year, the highway had a completed hard surface from about Evans to the SR 52 intersection in Martinez.

[16][17] By the end of the year, it had a sand clay or top soil surface from Phinizy to just northwest of Evans.

[18][19] About five years later, SR 104 had a completed hard surface from just southeast of Pollards Corner to just northwest of Evans.

[25][26] Riverwatch Parkway was originally constructed in the late 1980s and early 1990s to relieve heavy rush-hour traffic on congested Washington Road and John C. Calhoun Expressway, which many Augusta area residents used (and continue to use) to travel to and from work.