In the Tserkovski – Karnobat section (km 218+909 to km 232+243 on Track 1 and Track 2), a total of 21,812 meters of drainage ditches were built, including 14,564 meters of reinforced concrete type EKT ditches and 7,248 meters of earthen ditches;
In the Chernograd – Aytos section (km 243+996 to km 258+247 on Track 1 and Track 2), a total of 23,231 meters of drainage ditches were constructed, comprising 15,876 meters of reinforced concrete type EKT ditches and 7,355 meters of earthen ditches;
In the Aytos – Bulgarovo section (km 259+420 to km 270+260 on Track 1 and Track 2), a total of 15,384 meters of drainage ditches were installed, including 6,244 meters of reinforced concrete type EKT ditches and 9,140 meters of earthen ditches;
In the Lozovo Station – Vladimir Pavlov Station section (km 281+575 to km 289+200 on Track 1 and Track 2), a total of 12,758 meters of drainage ditches were constructed, consisting of 4,388 meters of reinforced concrete type EKT ditches and 8,370 meters of earthen ditches.
