GEISMAR — A contractor has started building a left-hand turn lane at La. 73 and Cornerview Road in Ascension Parish, a state spokesman said Tuesday.

The $708,000 project started Monday is expected to take about six weeks to finish, said Dustin Annison, spokesman for the state Department of Transportation and Development.

The turn-lane being built by Byron E. Talbot Contractor Inc. will carry traffic from La. 73 southbound onto Cornerview eastbound.