Gas prices are continuing their upward creep, and in some cases prices have topped $3 a gallon. According to AAA Michigan, the statewide average is sitting below the $3 mark, at $2.97 for a gallon of self-serve regular. In the Big Rapids area, however, prices are right at, or just above, the $3 mark. That’s up about 4.5 cents from last week and about 76 cents from this time last year.