I-124/U.S. 27 South

The Olgiati Bridge was previously reconstructed in 2003 with provisions built in for the eventual widening in 2019.
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U.S. 27 crosses the P.R. Olgiati Bridge with eight overall lanes.
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Riverfront Parkway, which passes below the Olgiati Bridge without direct access, was formerly a part of State Route 58.
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Interstate 124 commences southbound at Exit 1C with W 4th Street (SR 389). The exchange was rebuilt from a parclo into a diamond with the freeway mainline straightened out to eliminate an S-curve.
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Exit 1B was replaced with a frontage road extending south from Exit 1C at 4th Street to 6th Street and Martin Luther King Boulevard.
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The loop ramp (Exit 1 A) for Martin Luther King Boulevard (SR 316) east into Downtown Chattanooga was retained during 2015-20 roadwork.
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I-124/U.S. 27 navigate through an S-curve across W Main Street and Riverfront Parkway ahead of the three-wye interchange with Interstate 24.
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U.S. 27 joins a c/d roadway along I-24 eastbound through the Big Scramble Interchange.
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Lookout Mountain appears to the southwest from the S-curve taking I-124/U.S. 27 across W 20th Street.
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I-24 heads west around Lookout Mountain into north Georgia, where it connects with I-59 south to Birmingham, Alabama.
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Interstate 24 curves across the top level of the Big Scramble Interchange with I-124/U.S. 27.
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The ramp taking U.S. 27 south onto I-24 east joins the c/d roadway ahead of ramps for U.S. 11-41-64-72 (Broad Street) and Williams Street.
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