Emirates Road in Dubai is closed temporarily in both directions due to flooding.
The road will be closed between Expo Road and Al Fayah Truck Road on Monday.
The Road and Transport Authority has advised motorists heading towards Dubai to use alternative roads, including Sheikh Mohammed bin Zayed Road.
Motorists heading towards Abu Dhabi have been advised to use Expo Road.
The RTA said its emergency teams are dealing with the water accumulation to restore smooth traffic flow.
However, it did not indicate for how long Emirates Road will remain closed.
Thousands are expected to attend Christmas Day mass services on Monday in Abu Dhabi and Dubai.
Christians in the Emirates will unite for the festive season and look ahead to the New Year.
Hundreds turned out on Christmas Eve to attend Christmas Eve Mass services at St Joseph's Cathedral in Abu Dhabi and St Mary's Catholic Church in Dubai.