Interstate 81 in West Virginia (English Wikipedia)

"New I-81 Bridge Project Across Potomac River to Finish in December". Fort Washington, Pennsylvania: Construction Equipment Guide. June 30, 2020. Retrieved December 23, 2025.

davidrumsey.com (Global: low place; English: low place)

White's Topographical, County & District Atlas of West Virginia. Counties of Morgan, Berkeley, Jefferson (Map). 1:310,000. M.W. White. 1873. p. 22. Retrieved February 5, 2011.

dot.gov (Global: 1,690^th place; English: 998^th place)

fhwa.dot.gov

"Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways". FHWA Route Log and Finder List. Federal Highway Administration. December 31, 2021. Retrieved July 18, 2022.
"Table 1: Main Routes of the Dwight D. Eisenhower National System Of Interstate and Defense Highways". Route Log and Finder List. Federal Highway Administration. October 31, 2002. Retrieved February 5, 2011.
National Highway System: West Virginia (PDF) (Map). Federal Highway Administration. March 2005. Archived from the original (PDF) on October 17, 2008. Retrieved January 23, 2011.
"Economic Development History of Interstate 81 in Virginia". Federal Highway Administration. November 5, 2008. Archived from the original on March 21, 2005. Retrieved February 5, 2011.

highways.dot.gov

Slater, Rodney E. (Spring 1996). "The National Highway System: A Commitment to America's Future". Public Roads. 59 (4). Archived from the original on November 12, 2021. Retrieved January 24, 2011.

echo-pilot.com (Global: low place; English: low place)

Lewis, Mike (February 14, 2021). "$104.6 million project widening Interstate 81 over Potomac River is finished". Echo Pilot. Greencastle, Pennsylvania. Hagerstown Herald-Mail. Retrieved December 23, 2025.

heraldmailmedia.com (Global: low place; English: low place)

"Interstate 81 bridge widening to start this fall". The Herald-Mail. Hagerstown, Maryland. August 4, 2016. Retrieved December 23, 2025.

journal-news.net (Global: low place; English: low place)

McVey, John (January 16, 2014). "State plans construction project to widen I-81 to Potomac River bridges". The Journal. Archived from the original on March 7, 2016. Retrieved August 14, 2015.
Daniels, Emily (January 22, 2018). "I-81 widening on track". The Journal. Martinsburg, West Virginia. Retrieved December 23, 2025.

maps.google.com (Global: 2,258^th place; English: 1,630^th place)

"Interstate 81 in West Virginia" (Map). Google Maps. Retrieved February 5, 2011.

maryland.gov (Global: 2,659^th place; English: 1,407^th place)

roads.maryland.gov

"MDOT SHA Completes I-81 Bridge Project at Maryland/West Virginia Line in Washington County" (Press release). Baltimore: Maryland Department of Transportation State Highway Administration. February 11, 2021. Retrieved December 23, 2025.

measuringworth.com (Global: 2,465^th place; English: 1,383^rd place)

Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

millenniumhwy.net (Global: low place; English: low place)

"West Virginia Highways: Classification Systems, Characteristics and Usage" (PDF). As a Matter of Fact... West Virginia Department of Transportation. 1997. pp. II–8. Retrieved February 5, 2011.

newspapers.com (Global: 55^th place; English: 36^th place)

"Interstate Link To Open On Holiday". Charleston Daily Mail. Associated Press. May 26, 1961. p. 28. Retrieved December 23, 2025 – via Newspapers.com.
"Interstate 81 Section Open in W. Virginia". The Morning Herald. Hagerstown, Maryland. June 1, 1961. p. 2. Retrieved December 23, 2025 – via Newspapers.com.
"New Section Of Interstate 81 Opens Dec. 16". The Morning Herald. Hagerstown, Maryland. December 14, 1966. p. 2. Retrieved December 23, 2025 – via Newspapers.com.
"Interstate 81 Area Opens". Cumberland Evening Times. Associated Press. December 17, 1964. p. 16. Retrieved December 23, 2025 – via Newspapers.com.
"SRC To Open I-81 Section". Charleston Daily Mail. June 28, 1966. p. 19. Retrieved December 23, 2025 – via Newspapers.com.
"Five Miles Of Interestate 81 To Be Dedicated In Marlowe". The Daily Mail. Hagerstown, Maryland. June 29, 1966. p. 28. Retrieved December 23, 2025 – via Newspapers.com.
"I-81 Open This Year, Dedication Crowd Told". The Daily Mail. June 30, 1966. p. 1. Retrieved December 23, 2025 – via Newspapers.com.
"I-81 Segment Will Be Opened Oct. 19". The Raleigh Register. Beckley, West Virginia. United Press International. October 6, 1966. p. 1 – via Newspapers.com.
"Randolph, Smith At I-81 Dedication". Charleston Daily Mail. Associated Press. October 19, 1966. p. 19. Retrieved December 23, 2025 – via Newspapers.com.

web.archive.org (Global: 1^st place; English: 1^st place)

Public Roads Administration (August 14, 1957). Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials (Map). Washington, DC: Public Roads Administration. Archived from the original on July 19, 2017. Retrieved June 14, 2018 – via Wikimedia Commons.
I81 - Virginia to Maryland (PDF) (Map). West Virginia Department of Transportation. 2009. Archived from the original (PDF) on July 21, 2011. Retrieved February 5, 2011.
Slater, Rodney E. (Spring 1996). "The National Highway System: A Commitment to America's Future". Public Roads. 59 (4). Archived from the original on November 12, 2021. Retrieved January 24, 2011.
National Highway System: West Virginia (PDF) (Map). Federal Highway Administration. March 2005. Archived from the original (PDF) on October 17, 2008. Retrieved January 23, 2011.
"Economic Development History of Interstate 81 in Virginia". Federal Highway Administration. November 5, 2008. Archived from the original on March 21, 2005. Retrieved February 5, 2011.
"I-81 Potomac River Bridges to Undergo Makeover". WHAG-TV. January 16, 2014. Archived from the original on August 31, 2015. Retrieved August 14, 2015.
McVey, John (January 16, 2014). "State plans construction project to widen I-81 to Potomac River bridges". The Journal. Archived from the original on March 7, 2016. Retrieved August 14, 2015.
"West Virginia Interstate 81 Interchanges". West Virginia Department of Transportation. Archived from the original on April 21, 2011. Retrieved February 5, 2011.

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

Public Roads Administration (August 14, 1957). Official Route Numbering for the National System of Interstate and Defense Highways as Adopted by the American Association of State Highway Officials (Map). Washington, DC: Public Roads Administration. Archived from the original on July 19, 2017. Retrieved June 14, 2018 – via Wikimedia Commons.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

"West Virginia". Engineering News-Record. 162. McGraw-Hill: 71. 1959. ISSN 0013-807X.

wv.gov (Global: low place; English: 9,545^th place)

transportation.wv.gov

I81 - Virginia to Maryland (PDF) (Map). West Virginia Department of Transportation. 2009. Archived from the original (PDF) on July 21, 2011. Retrieved February 5, 2011.
"West Virginia Interstate 81 Interchanges". West Virginia Department of Transportation. Archived from the original on April 21, 2011. Retrieved February 5, 2011.

wvdot.com (Global: low place; English: low place)

gis.wvdot.com

General Highway Map - Berkeley County, West Virginia (PDF) (Map). 1:63,360. West Virginia Department of Transportation. January 1, 2008. § E3. Retrieved February 5, 2011.^{[permanent dead link]}

your4state.com (Global: low place; English: low place)

"I-81 Potomac River Bridges to Undergo Makeover". WHAG-TV. January 16, 2014. Archived from the original on August 31, 2015. Retrieved August 14, 2015.

Interstate 81 in West Virginia (English Wikipedia)

archive.org (Global: 6th place; English: 6th place)

books.google.com (Global: 3rd place; English: 3rd place)

constructionequipmentguide.com (Global: low place; English: low place)

davidrumsey.com (Global: low place; English: low place)

dot.gov (Global: 1,690th place; English: 998th place)

fhwa.dot.gov

highways.dot.gov

echo-pilot.com (Global: low place; English: low place)

heraldmailmedia.com (Global: low place; English: low place)

journal-news.net (Global: low place; English: low place)

maps.google.com (Global: 2,258th place; English: 1,630th place)

maryland.gov (Global: 2,659th place; English: 1,407th place)

roads.maryland.gov

measuringworth.com (Global: 2,465th place; English: 1,383rd place)

millenniumhwy.net (Global: low place; English: low place)

newspapers.com (Global: 55th place; English: 36th place)

web.archive.org (Global: 1st place; English: 1st place)

wikimedia.org (Global: low place; English: low place)

commons.wikimedia.org

worldcat.org (Global: 5th place; English: 5th place)

search.worldcat.org

wv.gov (Global: low place; English: 9,545th place)

transportation.wv.gov

wvdot.com (Global: low place; English: low place)

gis.wvdot.com

your4state.com (Global: low place; English: low place)

archive.org (Global: 6^th place; English: 6^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

dot.gov (Global: 1,690^th place; English: 998^th place)

maps.google.com (Global: 2,258^th place; English: 1,630^th place)

maryland.gov (Global: 2,659^th place; English: 1,407^th place)

measuringworth.com (Global: 2,465^th place; English: 1,383^rd place)

newspapers.com (Global: 55^th place; English: 36^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 5^th place; English: 5^th place)

wv.gov (Global: low place; English: 9,545^th place)