The State Road and Tollway Authority plans to hold four public information sessions — including two in Cumming — to provide details on tolls ending in December on the Ga. 400 Extension from Interstate 285 to Interstate 85 in Fulton County. Ga. 400 also runs through Forsyth and Dawson counties before ending at Ga. 60 in Lumpkin County. The project also would involve demolition of the Ga. 400 Toll Plaza.