For years, the section of I-5 known as the “Fife curve” has been notorious among locals for traffic backups.“It sucks,” lifelong Tacoma resident Dan Lafferty told the News Tribune.While pumping gas at a 76 station in the city of Fife, the 59-year-old said he drives the section of I-5 between Federal Way and Tacoma at least once a day for his work in the food service industry. It’s consistently worse than other portions of the interstate, he said…