SR 400 Express Lanes P3 (ongoing as of 2026)
Georgia is applying the same public-private partnership model on State Route 400 north of Atlanta, where a consortium is building tolled express lanes currently under construction, per GDOT. The state uses the model for roads where private financing and toll revenue replace public funds.
SR 400 is Georgia's working precedent for private construction and operation of express lanes on a major corridor.
It establishes the legal and financial template the I-285 award copies, including dynamic tolling and the Peach Pass system.
I-285 follows the SR 400 structure almost exactly, with a private developer building, financing, and operating the lanes for decades in exchange for toll revenue.
