Interstate 99
Interstate 99 is a part of the US
Interstate highway system. It is an intrastate only road in Pennsylvania. Its southern terminus is at Wolfsburg, Pennsylvania at
Interstate 76 (the
Pennsylvania Turnpike) and its northern terminus (as of 2002) is at Bald Eagle, Pennsylvania at United States Highway 220. Eventually, the Pennyslvania and New York transportation departments plan to extend the interstate to
Painted Post, New York at
Interstate 86.
58
Pennsylvania - 58 miles
Intersections with other Interstates
- Interstate 76 at Wolfsburg, Pennsylvania. (Strangely enough, this is not a true intersection, so it can be said that I-99 does not intersect any other 1 or 2-digit interstate.)
Spur routes
None
Located east of Interstate 79 and west of
Interstate 81, Interstate 99 is the bane of many road enthusiasts who treasure an orderly and sequential numbering system for Interstate highways. Interstate 99 is also known as the Appalachian Thruway and the Bud Shuster Byway, and it is the first Interstate highway to have its designation written into law (by Congressman Bud Shuster in the National Highway Designation Act of 1995). Several other Interstates (including future
Interstate 66 in Kentucky and
Interstate 86 in New York) have since had their designations written into law.
The number 99 violates the standard numbering convention associated with Interstate highways. According to numbering guidelines, the lowest odd numbers are on the West Coast and the highest numbers are on the East Coast. Several north-south routes, including Interstates 81, 83, 87, 89, 91, 93, 95, and 97, all lie east of Interstate 99.
Interstate 99 is planned to intersect Interstate 80 near State College, Pennsylvania.