The I-4 Ultimate Improvement Project is a planned $2.3 billion construction project spanning 21 miles from west of Kirkman Road in Orlando to east of State Road 434 in Longwood.
The project officially got underway Feb. 1, 2015, and is expected to be completed by 2021. Updates include widening I-4 to up to 10 lanes in some areas, including four express toll lanes.
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