The proposed project would include operational improvements along I-285 and SR 400 in the vicinity of the I-285/SR 400 interchange. The proposed improvements would include construction of barrier-separated collector-distributor (C/D) lanes along I-285 and SR-400, reconstruction of existing ramps, and new flyover bridges, as well as reconstruction and widening of existing bridges in the interchange area. Grade-separated, braided ramps would be constructed in the vicinity of Ashford Dunwoody Road and Roswell Road to eliminate conflicts between traffic entering and exiting SR 400 and traffic entering and exiting the Roswell Road and Ashford Dunwoody interchanges. Along I-285, the proposed project would begin west of Roswell Road and end east of Ashford Dunwoody Road, for a distance of approximately 4.3 miles on I-285. Along SR 400, the proposed project would begin at the Glenridge Connector south and extend north to the Hammond Drive interchange area, where it would tie into an adjacent project (GDOT P.I. No. 721850). The total length of the proposed improvements along SR 400 is approximately 1.2 miles. Proposed Right of Way is approximately 400-500ft. (includes existing ROW (300ft.)).
No field survey was required due to the fact that the survey area has previously been surveyed.
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