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Phase 1 Archaeological Survey of Five I-85 Off-System Bridges in Jackson and Franklin Counties, Georgia.

Author(s)
Report Number
9913
Year of Publication
2017
Abstract

The proposed project, P.I. No. 0015436, would replace five overpass bridges on I-85 in Jackson and Franklin counties (Figure 1). The proposed bridge spans would be able to accommodate four future travel lanes with 12 foot inside shoulders and 14 foot outside shoulders in each direction of travel on I-85. All bridge replacements would be within existing ROW and utilize off-site detours.

• The Plainview Road bridge over I-85 in Jackson County (Structure ID 157-0022-0) was built in 1963. The existing structure is a two-lane overpass with no sidewalk. The existing bridge is structurally deficient and functionally obsolete, with a sufficiency rating of 44.2. Due to the structural integrity of the bridge, replacement is recommended. The existing bridge dimensions are 261 feet by 30 feet, the proposed bridge replacement would be 261 feet by 33.25 feet.

• The Neal Road bridge over l-85 in Franklin County (Structure ID 119-0025-0) was built in 1962. The existing structure is a two-lane overpass with an unpaved road leading up to the bridge in both directions. Although the existing bridge has a sufficiency rating of 76.2, its design is functionally obsolete. Replacement is recommended. The existing bridge dimensions are 292 feet by 31.3 feet, the proposed bridge replacement would be 292 feet by 31 .25 feet.

• The Cedar Ridge Road bridge over I-85 in Franklin County (Structure ID 119-0035- 0) was built in 1962. The existing structure is a two-lane overpass with no sidewalk. The existing bridge has a sufficiency rating of 69.6. Due to the structural integrity of the bridge, replacement is recommended. The existing bridge dimensions are 277 feet by 31.9 feet, the proposed bridge replacement would be 277 feet by 33.25 feet.

• The Old Stage Coach Road bridge over 1-85 in Franklin County (Structure ID 119- 0023 -0) was built in 1962. The existing structure is a two-lane overpass with no sidewalk. Although the existing bridge has a sufficiency rating of 75.5, its design is functionally obsolete. Replacement is recommended. The existing bridge dimensions are 281 feet by 32 feet, the proposed bridge replacement would be 281 feet by 31.25 feet.

• The Brown Road bridge over I-85 in Franklin County (Structure ID 119-0017-0) was built in 1961. The existing structure is a two-lane overpass with no sidewalk. Although the existing bridge has a sufficiency rating of 61.4, its design is functionally obsolete. Replacement is recommended. The existing bridge dimensions are 264 feet by 30 feet, the proposed bridge replacement would be 264 feet by 33.25 feet.