Editing Interstate Highway System (section)

===Elevation===
* '''Highest''': {{convert|11158|ft|m}}: [[Interstate 70 in Colorado|I-70]] in the [[Eisenhower Tunnel]] at the [[Continental Divide of the Americas|Continental Divide]] in the [[Colorado]] [[Rocky Mountains]].<ref name="Interstate Highway System Fact Sheet">{{cite web |url = http://www.interstate50th.org/docs/InterstateHighwayFactSheet.pdf |archive-url = https://web.archive.org/web/20081010060935/http://www.interstate50th.org/docs/InterstateHighwayFactSheet.pdf |archive-date = October 10, 2008 |title = Interstate Highway Fact Sheet |publisher = American Association of State Highway and Transportation Officials |access-date = February 22, 2012 |author = American Association of State Highway and Transportation Officials |date = n.d. }}</ref>
* '''Lowest (land)''': {{convert|−52|ft|m|}}: [[Interstate 8|I-8]] at the [[New River (Mexico–United States)|New River]] near [[Seeley, California]].<ref name="Interstate Highway System Fact Sheet" />
* '''Lowest (underwater)''': {{convert|-103|ft|m}}: [[Interstate 95 in Maryland|I-95]] in the [[Fort McHenry Tunnel]] under the [[Inner Harbor|Baltimore Inner Harbor]].<ref>{{cite web |first1 = Jerry |last1 = Hall |first2 = Loretta |last2 = Hall |name-list-style = amp |date = July 1, 2009 |url = http://westernite.org/2009/the-adobe-tower-interesting-items-about-the-interstate-system/ |title = The Adobe Tower: Interesting Items about the Interstate System |work = Westernite |publisher = Western District of the Institute of Transportation Engineers |access-date = July 23, 2013 |url-status = dead |archive-url = https://web.archive.org/web/20130928111912/http://westernite.org/2009/the-adobe-tower-interesting-items-about-the-interstate-system/ |archive-date = September 28, 2013 }}</ref>