sentences:  In 2010, the highway had a minimum annual average daily traffic of 43,771 between Showalter Road and PA 163 and a maximum of 62,181 between Halfway Boulevard and US 40.The Interstate is often used by long-distance traffic as an alternative to I-95 to avoid traveling through the major cities of the East Coast.As a result, in 2001 the Maryland State Highway Administration began developing long-term plans to upgrade the entire length of I-81 in Maryland.