The entire Marina Coastal Expressway (MCE) tunnel will be closed for six hours on Sunday (Sept 11), the Land Transport Authority (LTA) said on Wednesday.
The tunnel will be closed in both directions from midnight to 6am, as will its slip roads, in order for tunnel works to be done.
The 5km-long MCE connects the Kallang-Paya Lebar Expressway (KPE) and the East Coast Parkway (ECP) to the Ayer Rajah Expressway (AYE).
Motorists are advised to drive carefully and follow the directional signs, said the LTA.
Those driving on MCE (ECP) are to exit to Central Boulevard at Exit 2, while those driving on KPE (ECP) are to exit to Sheares Ave or ECP (Changi) at Exit 1.