Residents and businesses in Narberth have been severely impacted with long delays for motorists driving through the town as a knock-on effect of work on the nearby by-pass.
On April 26 some drivers reported being stuck in the town centre snarl-up for more than an hour as congestion built on the one-way system and approach roads.
The problem was so bad that it featured on travel reports broadcast on BBC Radio.
County Councillor for Narberth, Cllr Marc Tierney said that he had raised concerns over additional traffic build ups before the temporary closure of Redstone Road with Council officers and Dyfed Powys Police but was unable to confirm the exact cause of the delays.
There will be further closures at Redstone Road at its current junction with the A40, as work continues on the multi-million pound, EU-funded Llanddewi Velfrey to Redstone Cross by-pass.
“Residents and businesses were severely impacted by the gridlock that brought Narberth to a standstill for hours,” said Cllr Tierney.
“We know that traffic can be a problem in Narberth and I've shared my concerns on this incident with the relevant organisations.
“I’d ask that all motorists travelling through town be considerate of other road users especially whilst Redstone Road remains closed.”