Project was initially due to be completed by 28 October
Work on completing the Millennium Bridge flap gate project will continue for a further month.
The Department of Infrastructure has confirmed the project is now due to finish by 27 November.
It had initially been scheduled to run from 5 to 28 October.
The extension allows the Department to close the road between 8pm and 3am each day, but this will only happen when weather and tidal conditions permit.
The 23-tonne flap gate was craned back into position last weekend, after undergoing maintenance work in Ramsey, and crews now need to dismantle the working area and cofferdam beneath the structure.
Government suffers fresh defeat over North and West Area Plan
Steam Packet confirms overnight sailings cancelledÂ
Plans to be submitted for Ramsey Harbour flood defence scheme
"Substantial progress" made on design of new Castle Rushen High School, says minister
"Demand for green, clean energy is rising amongst all businesses", says MUA