The partial closures of Central and Beach Road will continue through March 20 as the Provincial Electricity Authority continues its work to bury overhead power and communications wires.
PEA crews have been sinking 22-kilovolt distribution systems and underground cabling since March 11 on Beach Road between Central Road and Central Festival Pattaya Beach.
Half of Central Road from Sukhumvit Road to Beach Road also has been closed during weekdays, with the other side open to two-way traffic, cutting the arteries vehicle capacity in half.
The closures will continue through Wednesday from 8:30 a.m. to 3 p.m. Signs and detours already are in place.
PEA construction chief Thanu Surachaiwit said testing on the new underground power system began March 11 and the utility will test it for two months.
If everything works as planned, all above-ground power poles will be removed, although those needed to support cable-television, telephone and internet services will remain, he said.