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Task 7 Study Alignments and Design Levels Draft Technical Memorandum

Appendix A: Preliminary Corridors

At the second meeting of the EWG in December 2010, the project team presented the illustrative corridors depicted on Figures A-1 and A-2. The corridors were used to facilitate discussion among EWG members on the range of study alignment corridors. EWG members also identified potential issues to be considered in the corridor evaluation process. Based on the scope of work, at least four alignment alternatives are to be developed between Savannah and Lavonia; five alignment alternatives are to be developed between Lavonia and Knoxville. At least one of the alignments for each segment is required to meet Interstate design standards and at least one alignment for each segment should follow substantial portions of existing roadways.

Four illustrative corridors were identified by the project team between the Savannah and Augusta Control Points:

Savannah to Augusta Description (see Figure 2)
Corridor 1 Northward from I-16 east of Savannah, passing through Swainsboro, Louisville, and Thomson to reach I-20 west of Augusta; generally follows the existing US 1/SR 17 corridor
Corridor 2 Northward along Savannah River Parkway from I-16, passing through Statesboro, Millen, and Waynesboro, to I-520 in southern Augusta; generally follows the existing US 25 corridor
Corridor 3 Northwest from Savannah, passing near Sylvania and east of Waynesboro, to I-520 in southern Augusta; primarily along new alignment
Corridor 4 Northwest from I-95 north of Savannah and east of Savannah River Parkway to I-20 east of Augusta; combination of new and existing roadways

Five illustrative corridors were identified between the Augusta and Knoxville Control Points:

Augusta to Knoxville Description (see Figure 3)
Corridor 1 Northwest through Georgia from I-20 at Thomson, east of Athens, across I-85 near Commerce, westward along the southern boundary of the Chattahoochee National Forest to I-75 at Dalton, Georgia
Corridor 2 Through Georgia northwest from I-20 west of Augusta, passing Washington and Elberton, crossing I-85 near Lavonia, northwest through the National Forests near Georgia/Tennessee/North Carolina boundary to I-75 north of Cleveland, Tennessee
Corridor 3 Through Georgia northwest from I-20 west of Augusta, passing Washington and Elberton, crossing I-85 near Lavonia, northwest through the National Forest lands near Chatuge Lake and the western boundary of Great Smoky Mountains National Park to I-140 in Knoxville
Corridor 4 Through Georgia northwest from I-20 west of Augusta, passing Washington and Elberton, crossing I-85 near Lavonia, northward through the Great Smoky Mountains National Park on US 441 to I-140 in Knoxville
Corridor 5 Northwest from northern Augusta, through South Carolina west of Greenville and Asheville, past the eastern edge of the Great Smoky Mountains National Park to I-40 near Newport, Tennessee

EWG members offered a number of comments regarding sensitive resources that should be considered during the corridor development process. Their input is summarized below.

Other sensitive features, not specifically identified by the EWG, include the Eastern Band of Cherokee Indians Reservation, Historic Districts and Landmarks, population centers, environmental justice communities, and state/local parks. These and other constraints to highway development are discussed later in this document.

After reviewing the Illustrative Corridors described above, EWG members offered specific recommendations about routing for the corridors. Input from the EWG is summarized below.

Illustrative Corridor 4 should be relocated from US 441 into North Carolina to follow existing four-lane sections.

Updated: 03/22/2013
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