The northbound Alton Road flyover to Miami Beach coming from the eastbound MacArthur Causeway will shut down Monday night, officials said.
The bridge will be closed as contractors rebuild the base and replace the guardrail along the flyover, according to the Florida Department of Transportation.
The closure was expected to begin Sunday night but was delayed until Monday night because of rain.
A detour will be established along Alton Road and 5th Street. Drivers should seek alternate routes, if possible.
Officials said the construction will not affect bus service, business access or pedestrian access. The work is scheduled through mid-August.