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.
Farmers could be left 'high and dry' by tariffs response
Will the impending arrival of Wetherspoons to Manx shores impact the local music scene?
Thirty nine babies born in March
Fines of nearly £22k issued for Income Tax and NI offences
Warning over social media rental scam