 Main Street in Frostburg has the highest traffic density on the route, with an AADT of 15,022.For comparison, the parallel section of I-68 between exits 33 and 34 has an AADT of 20,931.In west Frostburg, the highway intersects MD 36, which then follows the same road as Alt US 40 for about a mile, separating from Alt US 40 in east Frostburg.