Service disruptions will affect the Texas Eagle and Crescent in early 2017.
Track work being done by Norfolk Southern will result in passengers ticketed aboard the New York-New Orleans Crescent riding buses between Atlanta and New Orleans.
In a service advisory, Amtrak said Nos. 19 and 20 will not operate on the following days south of Atlanta:
Southbound Train 19: Sunday through Wednesday on Jan. 8-11, 15-18, 22-25; Jan. 29-Feb. 1; and Feb. 5-8, 12-15 and 19-22.
Northbound Train 20: Monday through Thursday on Jan. 9-12, 16-19, 34-26; Jan. 30-Feb. 2; and Feb. 6-9, 13-16 and 20-23.
Intermediate stations affected are Anniston, Birmingham and Tuscaloosa in Alabama; Meridian, Laurel, Hattiesburg and Picayune in Mississippi, and Slidell, Louisiana.
On Thursdays, Fridays and Saturdays No. 19 will operate normally at all intermediate stations between Atlanta and New Orleans. Train No. 20 will have normal operations at those stations on Fridays, Saturdays and Sundays.