PRAIRIEVILLE — Motorists are advised that traffic on portions of La. 73 will be channeled into single lanes periodically Saturday between Airline Highway and La. 621 in Ascension Parish while crews lay asphalt, state highway officials said.

The single-lane closures will last from 8 a.m. to 4 p.m. in the Prairieville area on La. 73, northeast of La. 621 and southwest of Airline, Louisiana Department of Transportation and Development officials reported this week.

Crews working on a $17 million project to widen La. 73 from two to three lanes are putting down a layer of asphalt 1.5 inches deep, Brendan Rush, DOTD spokesman, said in a statement.

The overlay job, which is expected to be conducted under clear skies, follows a period of heavy rain that fell after the old top layer of the road surface had been removed, or milled. A number of potholes formed and DOTD crews had a hard time patching them in the wet weather, officials have said.

The asphalt overlay work and lane closures began Friday and were expected to be finished Saturday, Jem Hidalgo, DOTD spokeswoman, said in a statement.

While the overlay process goes forward, only part of La. 73 will be closed to one lane at a time as traffic will be allowed to flow in each direction intermittently in the open lane, Rush wrote.

Crews will provide traffic control. Vehicles 11 feet wide or less can drive through the construction zones without a permit, DOTD officials said.

Drivers of oversized vehicles must contact DOTD’s Permit Office before traversing the construction zones, DOTD officials said.