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Bridge construction continues on the widening of the overpass at M.L. King Boulevard and U.S. Highway 27, as workers use fill for support on a newly built retaining wall, Thursday, Feb. 28, 2019. / Staff photo by Tim Barber

Construction crews are erecting a retaining wall as part of the $143 million expansion and upgrade of the Highway 27 project through downtown Chattanooga.

The highway upgrade — one of the most expensive of its kind in Tennessee history — has been more costly and taken longer than expected, in part due to unexpected underground problems.

 

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Bridge construction continues on the widening of the overpass at M.L. King Boulevard and U.S. Highway 27, as workers use fill for support on a newly built retaining wall, Thursday, Feb. 28, 2019.
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