A detonator and 70m wire were also recovered from the spot in the Maoist-affected district yesterday.
A team of district police was on a combing operation when it recovered the explosive placed beneath a road near Hangwamini bridge on a rivulet, Kondagaon Additional Superintendent of Police Surjit Atri told PTI.
The explosive was planted by red rebels to attack the polling parties and security personnel during the polls this month, he said.
Improvised Explosive Devices (IEDs) have been recovered from several Naxal-affected districts, including Balod and Kondagaon, in the past one week.
Chhattisgarh, which has 11 Lok Sabha seats, will vote in three phases on April 10, 17 and 24.