Old Colwyn promenade will be closed until further notice, with hope it will reopen on Monday.
The closure of the promenade, off the A55, is due to the forecasted high tides and strong winds which have breached the footpath.
It was closed off on Wednesday afternoon (January 11) and is hoped to be on Monday (January 16) when the bad weather has passed.
Cllr Cheryl Carlisle has experessed her extreme concern over the state of the promenade after the bad weather.
She said: "This is not good for the safety of our community. The sea has breached the footpath, taking out a section of the wall, which means the bank can be eroded even more over the weekend.
"When I met the Coastguard, he was really concerned for safety.
"There will be emergency rails put up over the weeked. With hope it will reopen on Monday."
Photograph from Cllr Cheryl Carlisle
Conwy County Borough Council said in a press release: "Old Colwyn promenade is closed due to forecasted high tides and strong winds.
"Closing this section of the Promenade is not unusual in winter when we have high tides/severe weather.
"It will be reopened as soon as conditions safely permit."