MOUNT PLEASANT -- Drainage work hit a snag Wednesday on a section of the $84 million Johnnie Dodds Boulevard project, so Charleston County unexpectedly re-opened a section of frontage road it had closed Tuesday.

It was good news for some business owners at the nearby Plaza at East Cooper Shopping Center who had worried about lost customers because of the East Frontage Road closing for five days between Cliffwood Drive and Lakeview Drive.

However, the situation is only a temporary reprieve. The frontage road will close again at 7 a.m. Monday until sometime Sept. 23 to complete the job that was halted Wednesday, according to Charleston County.

The drainage work stopped because a necessary "water quality structure" was not on-hand.

"The water quality structure was not delivered by the supplier when the contractor had expected. It wasn't manufactured on time to get it to the site," county spokeswoman Tracey Amick said.

Frontage roads are vital arteries in Mount Pleasant because they are routes to many of the businesses along the heavily, commercial corridor.

The drainage work is part of the county project to widen three miles of the busy boulevard from four lanes to six lanes from the Arthur Ravenel Jr. Bridge to Interstate 526. It is funded by the county transportation sales tax and scheduled for completion in the spring of 2013.