Editing Interstate 99 (section)

===Origins===
[[File:I99SkyTop.jpg|thumb|upright|2002 photo of the I-99 excavation, looking south from [[Julian, Pennsylvania|Julian]] at the area where acidic rock was exposed on [[Bald Eagle Mountain]]]]
Corridor O of the [[Appalachian Development Highway System]] was assigned in 1965,{{Citation needed|date=May 2011}} running from [[Cumberland, Maryland]] ([[Corridor E (ADHS)|Corridor E]], now [[Interstate 68|I-68]]) to Bellefonte ([[Interstate 80 in Pennsylvania|I-80]]) along [[U.S. Route 220|US&nbsp;220]].<ref>{{cite web |url=http://www.arc.gov/images/programs/transp/adhs_status_report_2009/ADHS2009StatusReportGeneralReport.pdf |title=Status of the Appalachian Development Highway System as of September 30, 2009 |date=December 2009 |publisher=[[Appalachian Regional Commission]] |access-date=July 18, 2010 |archive-date=October 5, 2010 |archive-url=https://web.archive.org/web/20101005175607/http://www.arc.gov/images/programs/transp/adhs_status_report_2009/ADHS2009StatusReportGeneralReport.pdf |url-status=dead }}</ref> The portion in [[Pennsylvania]], from [[Bedford, Pennsylvania|Bedford]] north to [[Bald Eagle, Pennsylvania|Bald Eagle]], was upgraded to a [[controlled-access highway|freeway]] in stages from the 1960s to the 1990s. The first section, from [[U.S. Route 30 in Pennsylvania|US&nbsp;30]] in Bedford to [[Pennsylvania Route 56|PA&nbsp;56]] near [[Cessna, Pennsylvania|Cessna]], opened in the latter half of the 1960s.<ref>{{cite map |title=Pennsylvania |publisher=[[Sun Oil Company]] |year=1964 |edition=1964–65 |cartography=[[H. M. Gousha Company]]}}</ref><ref name="1970map">{{cite map|url=ftp://ftp.dot.state.pa.us/public/pdf/BPR_pdf_files/Maps/Statewide/Historic_OTMs/1970fr.pdf |title=Official Map of Pennsylvania |publisher=[[Pennsylvania Department of Highways]] |format=PDF |year=1970 |access-date=July 18, 2010 }}{{dead link|date=April 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Two more sections—from PA&nbsp;56 north to modern exit&nbsp;15 in [[Blair County, Pennsylvania|Blair County]] and from [[Charlottsville, Pennsylvania|Charlottsville]] (exit&nbsp;45) to Bald Eagle—were completed in the 1970s.<ref name="1970map" /><ref name="1980map">{{cite map |url=ftp://ftp.dot.state.pa.us/public/pdf/BPR_pdf_files/Maps/Statewide/Historic_OTMs/1980fr.pdf |title=Commonwealth of Pennsylvania Official Transportation Map |publisher=[[Pennsylvania Department of Transportation]] |format=PDF |year=1980 |access-date=July 18, 2010 }}{{dead link|date=July 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The portion between exit&nbsp;15 and [[Altoona, Pennsylvania|Altoona]] (exit&nbsp;33) was finished in the 1980s<ref name="1980map" /><ref>{{cite map|url=ftp://ftp.dot.state.pa.us/public/pdf/BPR_pdf_files/Maps/Statewide/Historic_OTMs/1989fr.pdf |title=Pennsylvania Official Transportation Map |publisher=[[Pennsylvania Department of Transportation]] |format=PDF |year=1989 |access-date=July 18, 2010 }}{{dead link|date=April 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> while the segment between modern exits&nbsp;33 and 45 was opened by 1997.<ref>{{cite map |publisher=[[Rand McNally and Company]] |title=Easy-to-Read Travel Atlas: United States–Canada–Mexico |year=1997 |page=44 |isbn=0-528-81575-X}}</ref>

[[File:2021-10-27 13 22 04 View north along Interstate 99 and U.S. Route 220 just north of Exit 41 in Antis Township, Blair County, Pennsylvania.jpg|thumb|left|I-99 and US&nbsp;220 northbound past PA&nbsp;865 near Bellwood]]
In 1991, the [[Intermodal Surface Transportation Efficiency Act]] (ISTEA) was signed into law.<ref name="istea-a">{{Cite web |title=Bill Summary & Status H.R.2950 |url=http://thomas.loc.gov/cgi-bin/bdquery/z?d102:HR02950: |access-date=June 23, 2014 |archive-date=December 15, 2012 |archive-url=https://web.archive.org/web/20121215195446/http://thomas.loc.gov/cgi-bin/bdquery/z?d102:HR02950: |url-status=dead }}</ref> It included a number of High Priority Corridors, one of which—Corridor&nbsp;9—ran along US&nbsp;220 from Bedford to [[Williamsport, Pennsylvania|Williamsport]], and then north on [[U.S. Route 15|US&nbsp;15]] to [[Corning (city), New York|Corning, New York]].<ref name="istea-text">{{Cite web |title=Bill Text H.R.2950 |url=http://thomas.loc.gov/cgi-bin/query/F?c102:7:./temp/~c102L9Hp2g:e206581: |access-date=June 23, 2014 }}{{Dead link|date=August 2021 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The [[National Highway System Designation Act of 1995]] amended ISTEA; among these amendments were that "the portion of the route referred to in subsection (c)(9) [Corridor 9] is designated as Interstate Route I-99."<ref name="nhsda-text">{{Cite web |title=National Highway System Designation Act of 1995 |url=http://www.gpo.gov/fdsys/pkg/PLAW-104publ59/html/PLAW-104publ59.htm |access-date=June 23, 2014 }}</ref> This was the first interstate highway number to be written into law rather than to be assigned by [[American Association of State Highway and Transportation Officials|AASHTO]]. The number was specified by Representative [[Bud Shuster]], who said that the standard spur numbering was not "catchy"; instead, I-99 was named after a street car, No. 99, that took people from Shuster's hometown of [[Glassport, Pennsylvania|Glassport]] to [[McKeesport, Pennsylvania|McKeesport]]. I-99 breaks the AASHTO numbering pattern associated with interstate highways, since it lies east of [[Interstate 79|I-79]] but west of [[Interstate 81|I-81]] (the number suggests it would be located very close to the [[Atlantic Ocean]], east of [[Interstate 95|I-95]]).<ref name="debate">{{cite news |title=Road Stirs Up Debate, Even on Its Name |newspaper=[[The New York Times]] |date=December 27, 2008 |url=https://www.nytimes.com/2008/12/28/us/28highway.html |first=Sean D. |last=Hamill}}</ref>