From Wikipedia, the free encyclopedia
|Maintained by PennDOT|
|Length:||85.6 mi (137.8 km)|
|Existed:||November 6, 1998 – present|
|South end:||I-70 / I-76 / US 220 / Penna. Tpk. near Bedford|
| PA 56 near Cessna
US 22 near Altoona
US 322 near State College
PA 26 near Pleasant Gap
|North end:||I-80 / US 220 near Bellefonte|
Main route of the Interstate Highway System
References[change | change source]
- "Report of the Special Committee on U.S. Route Numbering to the Standing Committee on Highways". American Association of State Highway and Transportation Officials. November 7, 1998. http://cms.transportation.org/sites/route/docs/1998-USRN_Cmte.pdf. Retrieved July 18, 2010.
- Google, Inc. Google Maps – overview map of I-99 [map]. Cartography by Tele Atlas. Retrieved on July 18, 2010.