Holiday traffic around San Diego International Airport at Lindbergh Field is poised to become more snarled, according to officials with the San Diego County Regional Airport Authority. A city water main replacement project along Harbor Drive near the airport is expected to cause periodic congestion and delays for vehicles going to and from Lindbergh Field through mid-April.  City construction crews have already begun work in the area of the intersection of Hawthorn Street and North Harbor Drive to replace a water main and feeder lines. More work will take place in phases as crews work their way up Harbor Drive toward Lindbergh Field.  According to Airport Authority officials, workers will bypass the area of Harbor Drive immediately in front of the airport, stopping work at Winship Lane then renewing work just west of the westernmost exit from Terminal 2 West and continue through to Lee Road.   As the project runs its course, city officials said lane closures and cone patterns will change, depending on where the work is being conducted.  Periodic congestion in the area may impact traffic in both directions, said officials.  As a result, Airport Authority officials are advising those travelers going to and from the airport to allow more time for their journey and to consider alternate routes during times of peak congestion.  Travelers should consider alternate routes that include using Laurel Street instead of Hawthorn and Grape Streets, or using Rosecrans Street and Nimitz Boulevard in Point Loma to reach and depart the airport.  Airport Authority officials said they are working with city officials to minimize project-related traffic congestion during peak travel times, particularly with the onset of the busy holiday travel periods. More information, visit www.sandiego.gov/engineering-cip/projectsprograms/groupjob3008.shtml.