List of longest state highways in the United States

In the United States, each state maintains its own system of state highways.^[a] This is a list of the longest state highways in each state. As of 2007^[update], the longest state highway in the nation is Montana Highway 200, which is 706.624 miles (1,137.201 km) long. The shortest of the longest state highways is District of Columbia Route 295, which is only 4.29 miles (6.90 km) long.

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List of highways

Longest state highways by state
State	Highway	mi	km	References
Alabama	State Route 3	386.449	621.929	^[1]
Alaska	Route 1	545.92	878.57	^[2]
Arizona	State Route 87	272.66	438.80	^[3]
Arkansas	Highway 7	296.01	476.38	^[4]
California	State Route 1	655.84	1,055.47	^[5]
Colorado	State Highway 14	236.92	381.29	^[6]
Connecticut	Route 15	83.53	134.43	^[7]
Delaware	Route 1	103.02	165.79	^[8]
District of Columbia	Route 295	4.29	6.90	^[9]^[b]
Florida	State Road A1A	338.752	545.168	^[10]^{[failed verification]}^[c]
Georgia	State Route 11	374	602	^[11]
Hawaii	Route 11	122.3	196.8	^[12]
Idaho	State Highway 75	170.666	274.660	^[13]
Illinois	Route 1^{[disputed – discuss]}	336	541	^[14]
Indiana	State Road 37	229.4	369.2	^[15]
Iowa	Highway 3	326.163	524.908	^[16]
Kansas	K-4	367	591	^[17]
Kentucky	Route 80	464.936	748.242	^[18]
Louisiana	LA 1	431.587	694.572	^[19]
Maine	State Route 11	401.2	645.7	^[20]
Maryland	Route 2	79.24	127.52	^[21]
Massachusetts	Route 28	151.93	244.51	^[22]
Michigan	M-28	290.373	467.310	^[23]
Minnesota	State Highway 1	345.954	556.759	^[24]
Mississippi	Highway 15	344.305	554.105	^[25]
Missouri	Route 5	355	571	^{[citation needed]}
Montana	Highway 200	706.624	1,137.201	^[26]
Nebraska	Highway 92	489.08	787.10	^[27]
Nevada	State Route 318	110.775	178.275	^[28]
New Hampshire	Route 16	149.75	241.00	^[29]
New Jersey	Route 47	75.19	121.01	^[30]^[d]
New Mexico	State Road 120	119.9	193.0	^[31]
New York	State Route 17	396.84	638.65	^[32]
North Carolina	Highway 24	284	457	^{[citation needed]}
North Dakota	Highway 200	420	680	^{[citation needed]}
Ohio	State Route 7	335.98	540.71	^[33]
Oklahoma	State Highway 3	615.0	989.7	^[34]^[e]
Oregon	Route 140^{[disputed – discuss]}	237.01	381.43	^[35]
Pennsylvania	Route 18	205	330	^[36]
Rhode Island	Route 138	48.3	77.7	^[37]
South Carolina	Highway 9	257	414	^[38]
South Dakota	Highway 34	419.01	674.33	^{[citation needed]}
Tennessee	State Route 1	538.8	867.1	^{[citation needed]}
Texas	State Highway 16	541.8	871.9	^[39]
Utah	State Route 24	160.243	257.886	^[40]
Vermont	Route 100	216.55	348.50	^[41]
Virginia	State Route 40	227.68	366.42	^[42]
Washington	State Route 20	436.13	701.88	^[43]
West Virginia	Route 20	262.1	421.8	^[44]
Wisconsin	Highway 35	412.15	663.29	^[45]
Wyoming	Highway 789	407.10	655.16	^[46]

Notes

^ Some states internally number the Interstate Highways and U.S. Highways within their state as state highways; these are not counted in the list.
^ DC-295 is the only non-national route in the district.
^ The multiple segments of FL A1A consist Florida's longest signed state highway, but FL 5 (the almost entirely unsigned designation for the US 1) is longer at 536.724 miles (863.774 km)
^ Route 47 is New Jersey's longest signed state highway, but Route 444 (the unsigned designation for the Garden State Parkway) is longer at 172.4 miles (277.5 km)
^ OK-3's length was computed using OK-3E, the older (and longer) of its two forks.

References

^ Alabama Department of Transportation. County Milepost Maps (PDF) (Map). Montgomery: Alabama Department of Transportation. Archived from the original (PDF) on June 25, 2008. Retrieved August 12, 2009.
^ Alaska Department of Transportation and Public Facilities (April 25, 2006). "Central Region General Log" (PDF). Juneau: Alaska Department of Transportation and Public Facilities. Routes 110000 (Sterling Highway), 130000 (Seward Highway), 134150 (Ingra Street), 134600 (6th Avenue), 134440 (5th Avenue), and 135000 (Glenn Highway).^{[dead link]}
Alaska Department of Transportation and Public Facilities (April 25, 2006). "Northern Region General Log" (PDF). Juneau: Alaska Department of Transportation and Public Facilities. Routes 135000 (Glenn Highway), 190000 (Richardson Highway), and 230000 (Tok Cut-Off Highway).^{[dead link]}
^ Arizona Department of Transportation. "2006 State Highway System Log" (PDF). Phoenix: Arizona Department of Transportation. Archived from the original (PDF) on June 25, 2008. Retrieved September 6, 2008.^{[page needed]}
^ Planning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original (Database) on June 23, 2011. Retrieved June 9, 2011.
^ California Department of Transportation. Truck Network Map (Map). Sacramento: California Department of Transportation. Retrieved March 1, 2014.
^ Colorado Department of Transportation. "Segment list for SH 14". Denver: Colorado Department of Transportation. Retrieved May 12, 2007.^{[dead link]}
^ Connecticut Department of Transportation. "Connecticut State Numbered Routes and Roads" (PDF). Hartford: Connecticut Department of Transportation. Archived from the original (PDF) on September 5, 2015. Retrieved October 30, 2007.
^ Delaware Department of Transportation (2006). "Traffic Count and Mileage Report" (PDF). Dover: Delaware Department of Transportation. Archived from the original (PDF) on March 18, 2009.^{[page needed]}
^ "National Highway Planning Network GIS data". Federal Highway Administration. August 2005. Archived from the original on August 23, 2007. Retrieved July 9, 2007.
^ Florida Department of Transportation. "Straight Line Diagrams". Florida Department of Transportation. Archived from the original on March 6, 2014. Retrieved April 1, 2014.
^ Georgia Department of Transportation. "400 reports" (PDF). Atlanta: Georgia Department of Transportation. Archived from the original (PDF) on September 26, 2007.
^ Voss, Oscar. "Big Island Route List". Hawaii Highways. Retrieved October 22, 2007.^{[self-published source]}
^ Idaho Transportation Department. "Idaho Milepoint Log". Boise: Idaho Transportation Department. Archived from the original on August 17, 2009.
^ Rand McNally (2004). The Road Atlas United States, Canada and Mexico (Map). Chicago: Rand McNally.^{[page needed]}
^ Google (August 12, 2009). "Length of Indiana Route 37: Southern Segment" (Map). Google Maps. Google. Retrieved August 12, 2009.
Google (August 12, 2009). "Length of Indiana Route 37: Northern Segment" (Map). Google Maps. Google. Retrieved August 12, 2009.
^ 2009 Volume of Traffic on the Primary Road System of Iowa (PDF) (Report). Iowa Department of Transportation. January 1, 2009. Retrieved January 10, 2011.
^ Kansas Department of Transportation. State Transportation Map (Map). Topeka: Kansas Department of Transportation. Archived from the original (PDF) on September 15, 2021. Retrieved December 1, 2021.
^ Division of Planning. "Highway Information System Official Milepoint Route Log Extract". Kentucky Transportation Cabinet. Archived from the original on April 30, 2007. Retrieved April 7, 2007.
^ Louisiana Department of Transportation and Development, Highway Inventory Unit (2016). "LRS Conversion Tool". Louisiana Department of Transportation and Development. Retrieved August 12, 2017.
^ "Maine State Route 11". Floodgap Roadgap's RoadsAroundME. Archived from the original on June 12, 2011. Retrieved July 21, 2009.^{[self-published source]}
^ Maryland State Highway Administration. "Highway Location Reference". Annapolis: Maryland State Highway Administration. Archived from the original on May 6, 2008., 2005
^ Massachusetts Office of Transportation Planning. "2005 Road Inventory". Executive Office of Transportation. Archived from the original on September 27, 2006.
^ Michigan Department of Transportation (2021). Next Generation PR Finder (Map). Michigan Department of Transportation. Retrieved October 11, 2021.
^ Minnesota Department of Transportation. "Statewide Trunk Logpoint Listing" (PDF). St. Paul: Minnesota Department of Transportation.
^ Mississippi Public Roads: Selected Statistics: Extent, Travel, and Designation (PDF) (Report). Mississippi Department of Transportation Planning Division. 2011. p. F-2. Archived from the original (PDF) on May 14, 2014. Retrieved May 29, 2019.
^ Montana Department of Transportation. Official 2007–2008 Montana Highway Travel Map (PDF) (Map). Helena: Montana Department of Transportation. Archived from the original (PDF) on July 28, 2007. Retrieved September 9, 2007.
^ Nebraska Department of Roads. Nebraska Highway Reference Log Book (PDF). Lincoln: Nebraska Department of Roads. Retrieved February 25, 2009.
^ Nevada Department of Transportation. Nevada State Maintained Highways, Descriptions, Index and Maps. Nevada Department of Transportation. Archived from the original on January 24, 2008. Retrieved March 1, 2014.
^ New Hampshire Department of Transportation. "Route Logs". New Hampshire Department of Transportation. Archived from the original on July 26, 2011.
^ New Jersey Department of Transportation. "Route 47 Straight Line Diagram" (PDF). New Jersey Department of Transportation. Retrieved April 9, 2007.
^ New Mexico Department of Transportation. New Mexico Department of Transportation State Route Log (PDF). Santa Fe: New Mexico Department of Transportation. Archived from the original (PDF) on October 29, 2005. Retrieved October 25, 2008.^{[page needed]}
^ New York State Department of Transportation (July 25, 2008). 2007 Traffic Data Report for New York State (PDF). Albany: New York State Department of Transportation. Retrieved July 17, 2009.
^ Transportation System Development (May 13, 2008). "RI82B: Centerline Miles, Lane Miles, and VMT by Route and County". Ohio Department of Transportation. Retrieved August 4, 2009.
^ Google (April 27, 2014). "SH-3—Colorado to Seiling" (Map). Google Maps. Google. Retrieved April 27, 2014.
Google (April 27, 2014). "SH-3—Seiling to Southwest Oklahoma City" (Map). Google Maps. Google. Retrieved April 27, 2014.
Google (April 27, 2014). "SH-3—Overlap with I-240" (Map). Google Maps. Google. Retrieved April 27, 2014.
Google (May 13, 2014). "SH-3—Overlap with I-40" (Map). Google Maps. Google. Retrieved May 13, 2014.
Google (May 13, 2014). "SH-3E" (Map). Google Maps. Google. Retrieved May 13, 2014.
Google (May 23, 2014). "SH-3—Ada to Idabel" (Map). Google Maps. Google. Retrieved May 23, 2014.
Google (May 23, 2014). "SH-3—Idabel to Arkansas" (Map). Google Maps. Google. Retrieved May 23, 2014.
^ "Road Assets and Mileage". Oregon Department of Transportation. Archived from the original on May 20, 2019. (primarily the Digital Video Log)
^ Calculated using DeLorme Street Atlas USA software
^ Google (December 20, 2011). "Overview map of RI 114" (Map). Google Maps. Google. Retrieved December 20, 2011.
^ Google (August 11, 2009). "Length of South Carolina Highway 9" (Map). Google Maps. Google. Retrieved August 11, 2009.
^ Texas Department of Transportation. "State Highway, Loop and Spur Facts". Texas Department of Transportation. Retrieved July 20, 2009.
^ Utah Department of Transportation. "Highway Reference". Utah Department of Transportation. Retrieved January 27, 2014.
^ Vermont Agency of Transportation. "2004 (Route Log) AADTs: State Highways" (PDF). Vermont Agency of Transportation. Archived from the original (PDF) on October 27, 2007. Retrieved October 28, 2007.
^ Virginia Department of Transportation (October 2006). "DRAFT Roadway Network". Virginia Department of Transportation. Archived from the original (GIS data) on May 18, 2008.
^ Washington State Department of Transportation (2013). State Highway Log: Planning Report 2013, SR 2 to SR 971 (PDF). Olympia: Washington State Department of Transportation. pp. 524–585.
^ Distance calculated using Microsoft MapPoint mapping software.
^ Wisconsin Department of Transportation. "Wisconsin Highway Trivia". Wisconsin Department of Transportation. Archived from the original on August 6, 2007. Retrieved October 6, 2007.
^ "WYDOT Reference Marker Book November 2004" (PDF). Wyoming Department of Transportation. Archived from the original (PDF) on July 17, 2011. Retrieved October 31, 2011.

External links

Media related to State highways in the United States at Wikimedia Commons

This page was last edited on 27 July 2023, at 15:08

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