Construction will result in some lane closures on New Circle Road during the overnight hours Monday through Saturday.
Beams will be set this week for new bridges.
The work will begin at New Circle and Alexandria Drive and move around New Circle to Old Frankfort Pike.
The speed limit has been reduced to 45 mph in the work zone.
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Updates on the work may be found on Twitter at @NewCircleRd.
New Circle is being widened between Versailles and Leestown roads. Completion of the project is expected to take two years.