Clwyd West MS Darren Millar, who earlier this year launched a petition against one-way plans for Rhos-on-Sea promenade, is disappointed that they have been given the green light this week.
The new traffic system, which forms part of £14m coastal defence work at Rhos-on-Sea, was agreed by Conwy council's cabinet on Tuesday.
It means the promenade will become a one-way single lane along the bottom of the Cayley Embankment.
Darren launched a petition against the proposals in February following strong opposition from local residents and businesses.
He outlined to Conwy County Borough Council that the changes would cause chaos and disruption and is therefore disappointed that the proposals have been approved.
“Despite all the objections to these plans, Conwy County Council’s cabinet have given them the green light this week, totally disregarding resident’s concerns.
“I am extremely disappointed by their decision, which will result in thousands of vehicles travelling up the embankment and more traffic driving through residential parts of Rhos-on-Sea causing chaos and disruption for local residents.
“A council report predicted a 778 percent increase in traffic on the Cayley Promenade if these plans go ahead. It is clear from this that they will cause traffic chaos, noise and air pollution and put people off visiting Rhos-on-Sea.
“It is therefore staggering that despite such evidence, and the vast strong opposition to these proposals, the council still believe these changes are the way to go.
“The Cabinet’s decision on Tuesday will have devastated residents and businesses, who were keen to protect the promenade and ensure it remains a popular place for people to visit.
“We of course support the sea defence works, but changing road layouts was not necessary and could be extremely damaging.”
The authority will now introduce a Traffic Regulation Order, which allows it to change traffic restrictions before work begins on the road.