The Port of Miami tunnel is supposed to open next month, and getting it ready is causing the MacArthur Causeway to close.
Tonight, beginning at 10 p.m., all eastbound lanes from 200 feet west of Interstate 395 to the Biscayne Boulevard exit will be closed overnight while crews test the new digital messaging signs.
All lanes will re-open to traffic at 5 a.m., Tuesday morning.
Wednesday night starting at 10 a.m. through Thursday at 5:30 am., the MacArthur is supposed to be closed in both directions.
Unrelated, but also starting at 10 p.m. tonight through 5 a.m. Tuesday, all southbound travel lanes and southbound express lanes on Interstate 95 will be closed off just north of the exit to eastbound I-195 (Julia Tuttle Causeway). This is supposed to happen each night through Thursday morning.