User:Niobrara/sandbox

Number	South or west terminus	North or east terminus	Formed	Eliminated	Current length (mi)[1][a]	(km)	"Historic" Droz (mi)[3]	(km)	Current measured by me	Historic measured by me	Notes
US 1	Key West, FL (FL 5)	Canada (Fort Kent, ME (ME 161))	1926		2,377	3,825	2,390	3,846	2371	2371
US 201	Brunswick, ME (US 1)	Canada (ME 6 (to QC 173))	1926		157	253	173	278	157.2	157.5
US 301	Sarasota, FL (US 41)	Southwest of Wilmington, DE (I-295, US 13, US 40) Formerly Baltimore, MD	1926		1,111	1,788	1,111	1,788	1098.5	1113.7	Historic extent to Farnhurst interchange near Wilmington DE.
US 401	Sumter, SC (US 76, US 521)	North of Norlina, NC (I-85, US 1)	1957		257	414	257	414	251.9	251.9
US 401	Clarksville, VA	South Hill, VA	1927	1931			53	85		27.2	South Hill to Clarksville.
US 401	Walterboro, SC	Raleigh, NC	1932	1934			272	438		267
US 501	Myrtle Beach, SC (US 17 Bus.)	Buena Vista, VA (US 60) Formerly Burkeville, VA	1926		355	571	370	595	353.6	353.6
US 601	South of Furman, SC (US 321) Formerly Florence, SC, then Hardeeville, SC	Mount Airy, NC (US 52)	1926		319	513	339	546	314.8	336.4	Historic extent between Hardeeville and downtown Mt. Airy.
US 701	Georgetown, SC (US 17) Formerly Charleston, SC	Southwest of Smithfield, NC (I-95, US 301)	1932		172	277	233	375	172.6	232	Historic extent to Charleston.
US 2 west	Everett, WA (I-5)	St. Ignace, MI (I-75) Formerly Canada (Sault Ste. Marie, MI)	1926		2,115	3,404	2,168	3,489	2114.9	2168.2	Historic extent to Canada border in Sault Ste. Marie.
US 2 east	Canada (Rouses Point, NY)	Canada (Houlton, ME)	1926		450	724	450	724	459.8	460.6	Historic extent to Canada border in Rouses Point.
US 102	Crystal Falls, MI	Covington, MI	1926	1928			36	58		43.8
US 202	Northwest of New Castle, DE (US 13, US 40, US 301)	Bangor, ME (US 1 Alt., I-395)	1934		627	1,009	671	1,080	627.3	628.5	Historic extent to downtown Bangor.
US 302	Montpelier, VT (US 2)	Portland, ME (I-295, US 1)	1935		171	275	179	288	168.6	171.2	Distance between historic endpoints in Montpelier and Portland.
US 3	Boston, MA (US 20)	Canada ((Pittsburg, NH) to QC 257)	1926		273	439	278	447	277.6	277.6	Massachusetts signs the south end in Cambridge, northeast of AASHTO's end
US 4	Southeast of Albany, NY (US 9, US 20)	Portsmouth, NH (I-95, US 1 Byp.)	1926		256	412	256	412	252.7	252.7
US 104	Niagara Falls, NY	East of Mexico, NY	1934	1971			167	269		171
US 5	New Haven, CT (I-91)	Canada (Derby Line, VT (to QC 143))	1926		300	483	313	504	300.5	304.4	Historic extent to West Haven.
US 6	Bishop, CA (US 395) Formerly Long Beach, CA	Provincetown, MA (MA 6A)	1926		3,207	5,161	3,652	5,877	3209	3504
US 106	Wyalusing, PA	Narrowsburg, NY	1926	1973			95	153		93.9
US 206	Hammonton, NJ (US 30)	Milford, PA (US 6, US 209)	1934		131	211	131	211	130.2	131.0	Historic extent to downtown Milford PA.
US 7	Norwalk, CT (I-95) Formerly New York, NY	Canada (Highgate Springs, VT (I-89)	1926		309	497	313	504	307.9	307.9	Vermont signs the north end at I-89 south of the border crossing
US 8	Forest Lake, MN (I-35) Formerly Minneapolis, MN	Norway, MI (US 2)	1926		281	452	312	502	279.6	308.6	Historic extent to downtown Minneapolis.
US 9	Laurel, DE (US 13) Cape May, NJ (ferry)	Lewes, DE (ferry to Cape May, NJ) Canada (Champlain, NY (I-87))	1926		521	838	521	838	520.5	520.5	Figure does not include 16.2 mile ferry segment.
US 109	New York, NY	Glens Falls, NY	1926	1927			214	344			Almost certainly never signposted.
US 209	Millersburg, PA Formerly northwest of Dauphin, PA	Kingston, NY (US 9W)	1926		217	349	231	372	211.3	224.8	Historic extent to Duncannon PA.
US 309	Philadelphia, PA	Waverly, NY	1926	1967			214	344		219
US 10	West Fargo, ND (I-90) Formerly Seattle, WA Ludington, MI (ferry)	Manitowoc, WI (ferry) Bay City, MI (I-75, US 23) Formerly Detroit, MI	1926		711	1,144[b]	2,490	4,007	713.3	2128.3	Figures do not include 60.6 mile ferry segment.
US 110			1926	1938			30	48		26.1
US 210			1926	1972			127	204		117.5
US 310	Greybull, WY (US 14, US 16, US 20)	Laurel, MT (I-90, US 212)	1926		108	174	114	183	103.6	103.6	Wyoming signs the east (south) end where AASHTO has it join US 14/US 16/US 20 west of Greybull
US 410	Aberdeen, WA (US 101)	Lewiston, ID (US 95)	1926	1967			469	755		443	Largely replaced by US 12. A long section is SR 410.
US 11	East of New Orleans, LA (US 90)	Canada (Rouses Point, NY)	1926		1,645	2,647[c]	1,761	2,834	1655.8	1672.3	Assuming US 11W in TN; US 11E adds 9.7 miles. Historic distance to intersection of Broad and Canal in NOLA.
US 111			1926	1963			254	409		234.7	Only 71.5 mi. for majority of its existence.
US 211	New Market, VA (I-81)	Warrenton, VA (US 15 Bus., US 29 Bus.)	1926		61	98	106	171	59.0	101.0	Historic distance to Washington DC.
US 311	Winston-Salem, NC	Danville, VA	1926		60.1	97[d]	259	417	60.1	74.2	Maximum extent was actually 247 miles (Roanoke to Rowland) but only for two years.
US 411	Leeds, AL (US 78)	Newport, TN	1934		341	549	403	649	310.1	394.9	Historic extent to Bristol.
US 411			1926	1932			110	177		99.2
US 411			1932	1934			109	175		107.4
US 511			1926	1929			284	457		116
US 611	Philadelphia, PA	Scranton, PA	1926	1972			131	211		130	Much of the old route is now Pennsylvania State Hwy 611
US 711			1926	1927			103	166			Almost certainly never signposted, but would have been about 74 miles long.
US 12	Aberdeen, WA (US 101)	Detroit, MI	1926		2,483	3,996	2,483	3,996	2477.7	2478.2
US 112			1926	1961			207	333		203.5
US 212	Yellowstone National Park, WY	Eden Prairie, MN (US 169)	1926		952	1,532	962	1,548	949.0	968.3	Historic extent to St. Paul MN.
US 312			1960	1981			234	377		231	224 miles for the majority of its existence.
US 13	Northeast of Fayetteville, NC (I-295/I-95)	Morrisville, PA	1926		526	847	534	859	527	527	Pennsylvania signs the north end at US 1, just south of AASHTO's end
US 113	Pocomoke City, MD (US 13)	Milford, DE	1926		73	117	94	151	74.5	93.5	Historic distance to Dover DE.
US 213			1926	1973			156	251		148
US 14	Yellowstone National Park, WY	Chicago, IL (US 41)	1926		1,398	2,250	1,429	2,300	1395.1	1402.6	Historic extent to downtown Chicago.
US 15	Walterboro, SC (US 17 Alt.)	West of Corning, NY (I-86)	1926		794	1,278	895	1,440	793.4	881.5	Historic extent to Rochester NY.
US 16	Yellowstone National Park, WY	Rapid City, SD (I-90, US 14)	1926		489	787	1,625	2,615	487.8	1524.8	Historic extent between Rapid City and Detroit, not including 82.7 mile ferry segment.
US 116			1926	1934			158	254		27.5	Was 183 mi. long but only for one year.
US 216			1930	1934			130	209		48.3	Was 130 mi. long but only for one year.
US 17	Punta Gorda, FL (US 41)	Winchester, VA (US 11, US 50, US 522)	1926		1,189	1,914	1,189	1,914	1205.4	1205.4
US 17-1			1926	1932			243	391		233
US 117	Wilmington, NC	West of Wilson, NC (I-95, US 264)	1932		123	198[e]	213	343	113.5	113.5
US 117			1926	1932			159	256		150
US 217			1926	1932			165	266		150
US 18	Southeast of Douglas, WY (I-25, US 20, US 26, US 87)	Milwaukee, WI	1926		1,033	1,662	1,033	1,662	1034.6	1034.6
US 118			1926	1937			35	56		41.4
US 218	Keokuk, IA (US 136)	Owatonna, MN (I-35, US 14)	1926		319	513	637	1,025	319.3	319.3
US 19	North of Bradenton, FL (US 41)	Erie, PA (US 20)	1926		1,386	2,231[f]	1,438	2,314	1365.7	1365.7	Distance using US 19W; US 19E adds another 11.4 mi.
US 119	Pineville, KY (US 25E)	South of DuBois (US 219)	1926		585	941	615	990	552.7	552.7
US 219	Rich Creek, VA (US 460)	Southeast of Buffalo, NY (I-90)	1926		535	861	556	895	513.4	531.5	Historic extent to Princeton WV.
US 319	Apalachicola, FL (US 98)	Wadley, GA (US 1)	1933		318	512	318	512	312.3	312.3
US 20	Newport, OR (US 101) Yellowstone National Park, MT, WY	Boston, MA	1926		3,237	5,209	3,403	5,477	3203.3	3215.7	Mileage is combined total of two disconnected segments. Implied mileage through Yellowstone NP brings the total to 3283.2
US 20 west	Newport, OR (US 101)	Yellowstone National Park, MT	1940		3,237	5,209	3,403	5,477	856.8	856.8	West segment only
US 20 east	Yellowstone National Park, WY	Boston, MA	1926		3,237	5,209	3,403	5,477	2346.5	2346.5	East segment only
US 120			1926	1967			447	719		102.9	Was 249.5 mi. during the brief time it went to Reading.
US 220	Rockingham, NC (US 1)	South Waverly, PA	1926		681	1,096	681	1,096	676.5	676.5
US 320			1926	1939			26	42		22.1
US 420			1926	1933			41	66		40.5
US 21	East of Beaufort, SC	Wytheville, VA (I-81, US 52)	1926		393	632	843	1,357	393.4	829.6	Historic extent to Cleveland.
US 121 (future)	Pound, VA (US 23)	Beckley, WV (I-64, I-77)	2005		112	180[g]	112	180			Currently unbuilt; will not be complete for years, if ever.
US 121			1926	1934			107	172		98.9	Assuming Ft. Chiswell terminus.
US 221	Perry, FL (US 19, US 27 Alt., US 98)	Lynchburg, VA (US 29 Bus., US 460 Bus., US 501 Bus.)	1930		734	1,181	734	1,181	728.9	728.9
US 321	Hardeeville, SC (US 17)	Northwest of Lenoir City, TN (I-40)	1930		526	847	526	847	513.5	514.2	Historic extent to jct. I-95.
US 421	South of Wilmington, NC	Michigan City, IN (US 20)	1930		941	1,514	980	1,577	949.3	952.2	Historic extent to downtown Michigan City.
US 521	Georgetown, SC (US 17)	Charlotte, NC (I-485)	1932		177	285[h]	191	307	176.6	192.7	Historic extents in Charlotte and Georgetown.
US 22	Cincinnati, OH (US 27, US 42, US 52, US 127)	Newark, NJ (US 1, US 9)	1926		651	1,048	665	1,070	648.7	648.7
US 122			1926	1934			165	266		87.1
US 122			1935	1963			128	206		128
US 222	Perryville, MD (US 40)	Southwest of Allentown, PA (I-78)	1926		109	175	116	187	95.0	111.2	Historic extent from central Allentown to Perryville MD.
US 322	Cleveland, OH (US 6, US 20, US 42, US 422)	Atlantic City, NJ	1926		494	795	494	795	484.6	484.6
US 422 east	Hershey, PA (US 322, PA 39)	King of Prussia, PA (US 202, I-76)	1926		273	439	303	488	82.9	82.9	Historic distance slightly longer to Philadelphia.
US 422 west	Cleveland, OH (US 6, US 20, US 42, US 322)	Ebensburg, PA (US 219)	1926		273	439	303	488	187.5	189.7
US 522	Northwest of Powhatan, VA (US 60)	Selinsgrove, PA (US 11, US 15)	1926		308	496	317	510	307.8	307.8
US 622			1926	1927			66	106			Almost certainly never signposted, but would have been about 63 miles long.
US 23	Jacksonville, FL (US 1, US 17)	Mackinaw City, MI (I-75)	1926		1,444	2,324	1,476	2,375	1412.7	1412.7	Michigan signs the north end where it merges with I-75, while AASHTO continues it north to the south end of the Mackinac Bridge
US 123	West of Toccoa, GA (US 23)	Greenville, SC (I-385)	1937		75	121[i]	87	140	74.2	81.6
US 123			1930	1934			96	154		83.3
US 223	Sylvania, OH (SR 51/SR 184)	South of Jackson, MI (US 12, US 127)	1930		59	95	59	95	47.1	56.6	Ohio signs the south end at US 23 northwest of Toledo; Michigan signs the north end at the merge with US 127, south of US 12
US 24	Minturn, CO (I-70, US 6)	Pontiac, MI	1926		1,540	2,478	1,709	2,750	1549.8	1694.8	Historic extent to Grand Junction.
US 124			1926	1938			80	129		80.1
US 224	Huntington, IN (US 24)	New Castle, PA (US 422)	1933		287	462	287	462	287.4	290.6	Historic extent to east side of New Castle.
US 25	Brunswick, GA (US 17)	Ohio River (Covington, KY: US 42, US 127)	1926		750	1,207[j]	1,151	1,852	708.3	1115.8	Historic extent to Port Austin MI.
US 26	South of Seaside, OR (US 101)	Ogallala, NE (I-80)	1926		1,506	2,424	1,557	2,506	1498.3	1517.6	Historic extent to Astoria.
US 126			1952	1972			131	211		129
US 27	Miami, FL (I-195, US 1)	Fort Wayne, IN (I-69)	1926		1,364	2,195	1,749	2,815	1356.8	1717.8	Historic extent to St. Ignace MI.
US 127	Chattanooga, TN (US 11, US 64, US 72)	South of Grayling, MI (I-75)	1926		758	1,220	758	1,220	746.5	749.8	Historic total reflects the 3.3 mi official but unsigned segment in Chattanooga.
US 227			1928	1972			120	193		115
US 28			1926	1952			462	744		462
US 29	Pensacola, FL (US 90, US 98)	West of Baltimore, MD (I-70)	1926		1,036	1,667	1,060	1,706	1039.6	1048.5	Historic extent to downtown Baltimore.
US 129	Chiefland, FL (US 19, US 27 Alt., US 98)	Knoxville, TN (I-40)	1926		582	937	682	1,098	581.4	581.4
US 30	Astoria, OR (US 101)	Atlantic City, NJ	1926		3,073	4,946	3,472	5,588	3078.5	3078.5
US 130	Southwest of Penns Grove, NJ (I-295, US 40)	Southwest of New Brunswick, NJ (US 1)	1926		83	134	93	150	83.2	83.2
US 230			1926	1966			40	64		35.9
US 330			1926	1942			161	259		150
US 430			1926	1934			37	60		26.2
US 530			1926	1938			25	40		21.9
US 630			1926	1927			2	3			Was gone by mid-1927, and probably never signposted, but would have been 2.9 miles long.
US 730	East of Boardman, OR (I-84, US 30)	South of Wallula, WA (US 12)	1926		42	68	47	76	41.5	44.5
US 830	Northeast of Ilwaco, WA (US 101)	North of Maryhill, WA (US 97)	1926	1968			209	336		201.7	Exists as SR 14, I-5 (former US 99), SR 432, and SR 4.
US 31	Mobile, AL (US 43, US 45)	Mackinaw City, MI (I-75)	1926		1,290	2,076[k]	1,358	2,185	1287.7	1315	Historic maximum extent between Mobile and north of St. Ignace MI.
US 131	North of Middlebury, IN (I-80, I-90)	Petoskey, MI (US 31)	1926		271	436	297	478	270.3	270.3
US 231	Panama City, FL (US 98 Bus.)	West of Crown Point, IN (US 41)	1926		912	1,468	932	1,500	917.2	917.2
US 331	East of Destin, FL (US 98)	Montgomery, AL (US 80, US 82)	1953		151	243	156	251	151.8	156.0
US 331			1926	1936			45	72		44.4
US 431	Dothan, AL (US 231)	Owensboro, KY (US 60)	1954		556	895	582	937	556.5	559.8	Historic extent to downtown Owensboro.
US 32			1926	1934			511	822		484.9
US 33	Richmond, VA	Elkhart, IN (US 20)	1937		703	1,131[l]	766	1,233	701.8	764.9	Historic extent to Lake Michigan Beach.
US 34	Granby, CO (US 40)	Southwest of Chicago, IL	1926		1,122	1,806	1,135	1,827	1127.8	1138.4	Historic extent to Lakeshore in Chicago.
US 35	Scott Depot, WV	Michigan City, IN (US 20)	1934		424	682	439	707	416.3	440.6	Historic extent between Charleston WV and downtown Michigan City.
US 36	West of Estes Park, CO (US 34)	Uhrichsville, OH (US 250)	1926		1,414	2,276	1,438	2,314	1402.8	1362.1	Historic mileage is Denver to Cadiz OH.
US 136	North of Edison, NE (US 6, US 34)	Veedersburg, IN (US 41)	1951		744	1,197	804	1,294	799.9	799.9
US 37			1935	1944			204	328			This route seems to have been authorized by AASHO, but never signposted by the states.
US 38			1926	1931			598	962		539	Distance from Greeley to Omaha.
US 138	Sterling, CO (US 6)	North of Big Springs, NE (US 30)	1926		72	116	73	117	71.2	71.2
US 40	North of Park City, UT (I-80, US 189) Formerly San Francisco, CA, then Reno, NV	Atlantic City, NJ	1926		2,298	3,698	3,228	5,195	2297.4	3054.4	Historic mileage calculated by measuring I-80 from Park City to San Francisco.
US 140			1926	1977			54	87		50.9	Measured to jct. US 30, its true endpoint (jct. US 15 was .4 miles shorter).
US 240			1926	1971			118	190		43.3
US 340	Northeast of Greenville, VA (US 11)	Frederick, MD (US 15, US 40)	1926		156	251	156	251	155.6	156.9
US 41	Miami Beach, FL	East of Copper Harbor, MI	1926		2,006	3,228	2,035	3,275	2010.8	2010.8
US 141	North of Green Bay, WI (I-43)	South of L'Anse, MI (US 41)	1926		176	283	290	467	174.9	282	Historic extent to Milwaukee.
US 241			1926	1930			81	130		72.9
US 241			1930	1954			378	608		420.6
US 341	Brunswick, GA (US 17)	Barnesville, GA (US 41)	1926		226	364	257	414	224.1	228.6
US 441	Miami, FL (US 27)	Lake City, TN (US 25W)	1926		936	1,506	947	1,524	904.4	936.0	Mileage is combined total of two disconnected segments. Implied (and historic) mileage through GSMNP brings the total to 936.0
US 441 north	Gatlinburg, TN (Great Smoky Mountains National Park)	Rocky Top, TN (US 25W)	1970		936	1,506	947	1,524	69.2	69.2	North segment only
US 441 south	Miami, FL (US 27)	Cherokee, NC (Great Smoky Mountains National Park)	1970		936	1,506	947	1,524	835.2	835.2	South segment only
US 541			1931	1951			51	82		50.6
US 641	South of Camden, TN (I-40)	Marion, KY (US 60)	1955		132	212	149	240	165.3	229.0	Historic extent to Evansville IN.
US 42	Louisville, KY (I-65, US 60)	Cleveland, OH (US 6, US 20, US 322, US 422)	1926		355	571	355	571	350.1	350.1	Kentucky signs the west end of US 42 at US 31E/US 60, just west of I-65
US 43	Prichard, AL	Columbia, TN (US 31)	1934		410	660	523	842	409.5	413.2	Historic extent to Mobile.
US 143			1935	1944			226	364			This route seems to have been authorized by AASHO, but never signposted by the states.
US 44	Northeast of Ellenville, NY (US 209)	Plymouth, MA	1934		238	383	238	383	236.2	236.2
US 45	Mobile, AL (US 31, US 43, US 90)	Ontonagon, MI	1926		1,297	2,087[m]	1,299	2,091	1297.9	1298.8	Historic extent to Government and Broad in Mobile.
US 46	Columbia, NJ (I-80 / NJ 94)	Hudson River (Fort Lee, NJ: I-95, US 1, US 9)	1935		75	121	79	127	74.9	74.9
US 48	East of Weston, WV (I-79, US 33, US 119)	North of Strasburg, VA (I-81)	2002		148	238	148	238	157	157	Length according to WP; West Virginia portion is not quite complete as of 2019.
US 48			1926	1931			67	108		84.8
US 48			1975	1989			113	182		111.8
US 49	Gulfport, MS (US 90)	Piggott, AR (US 62)	1926		516	830[n]	516	830	518.3	518.3	Via US 49W, although US 49E is only .3 miles longer.
US 50	West of Sacramento, CA (I-80)	Ocean City, MD	1926		3,011	4,846	3,231	5,200	3015	3133
US 150	South of Moline, IL (US 6)	Mount Vernon, KY (US 25)	1926		571	919	590	950	563.2	572.1	Historic extent to Rock Island IL.
US 250	Sandusky, OH (US 6)	Richmond, VA (I-95, US 60, US 360)	1926		514	827	514	827	509.9	509.9
US 350	Trinidad, CO (I-25, US 85, US 87, US 160)	La Junta, CO (US 50)	1926		80	129	84	135	72.8	80.1	Colorado signs the west end at US 160 northeast of Trinidad
US 450			1926	1939			465	748		415
US 550	North of Albuquerque, NM (I-25, US 85)	Montrose, CO (US 50)	1926		302	486	305	491	303.8	303.8
US 650			1926	1936			27	43		23.3
US 51	West of New Orleans, LA (US 61)	Hurley, WI (US 2)	1926		1,286	2,070	1,359	2,187	1269.8	1295.9	Historic extent to New Orleans.
US 151	Northeast of Williamsburg, IA (I-80)	Manitowoc, WI (US 10)	1926		337	542	337	542	327.1	327.1
US 52	Canada (Portal, ND)	Charleston, SC (US 17)	1926		2,072	3,335	2,123	3,417	2075.7	2075.7
US 152			1934	1938			176	283		167.8
US 53	La Crosse, WI (US 14, US 61)	Canada (International Falls, MN)	1926		403	649	407	655	403.3	403.3
US 54	Mexico (El Paso, TX)	Northeast of Pittsfield, IL (I-72, US 36)(Formerly Chicago)	1926		1,206	1,941[o]	1,494	2,404	1198.6	1476.6	Historic extent to Chicago.
US 154			1926	1982			36	58		35.8
US 55	Davenport, IA (US 61)	Minneapolis, MN (US 12)	1926	1934			370	595		362.8
US 56	Springer, NM (I-25, US 85)	Kansas City, MO (US 71)	1957		640	1,030	661	1,064	639.0	656.6	Historic extent to Independence MO.
US 156			1957	1982			101	163		176.7
US 57	Mexico (Eagle Pass, TX)	Southwest of Moore, TX (I-35)	1970		103	166	103	166	98.4	98.4
US 58	Cumberland Gap, TN (US 25E)	Virginia Beach, VA (US 60)	1931		509	819	535	861	509.3	509.3
US 158	Mocksville, NC (US 64, US 601)	South of Nags Head, NC (US 64)	1932		347	558	367	591	349.4	349.4
US 258	Jacksonville, NC (US 17)	Hampton, VA	1932		217	349	225	362	220.3	220.3
US 59	Laredo, TX (I-35, US 83)	Canada	1935		1,911	3,075	1,959	3,153	1912.5	1912.5
US 159	Nortonville, KS (US 59)	Southeast of Mound City, MO (US 59)	1935		85	137	86	138	84.9	82.8	Historic distance to Craig MO.
US 259	Nacogdoches, TX (US 59)	South of Heavener, OK (US 59, US 270)	1963		250	402	250	402	254.0	254.0
US 60	East of Quartzsite, AZ (I-10)	Virginia Beach, VA	1926		2,670	4,297	2,963	4,768	2654	2909.6
US 160	West of Tuba City, AZ (US 89)	Southwest of Poplar Bluff, MO (US 67)	1930		1,464	2,356	1,474	2,372	1466.0	1476.2	Historic extent to Poplar Bluff.
US 260			1931	1962			298	480		290
US 360	Danville, VA (US 58 Bus.)	East of Warsaw, VA	1933		223	359	238	383	225.3	225.3
US 460	Frankfort, KY (US 60, US 421)	Norfolk, VA (US 60)	1933		655	1,054	1,034	1,664	645.8	999.8	Historic extent to St. Louis.
US 61	New Orleans, LA (US 90)	Wyoming, MN (I-35)	1926		1,400	2,253	1,714	2,758	1400.5	1672.5	Historic extent to Grand Portage MN.
US 161	Keokuk, IA (US 61)	Key West, IA (US 61)	1926	1934			193	311		178
US 62	Mexico (El Paso, TX)	Canada (Niagara Falls, NY)	1930		2,248	3,618	2,289	3,684	2246.9	2246.9	New York signs the north (east) end in Niagara Falls, northeast of the border crossing
US 63	Ruston, LA (I-20, US 167)	Southwest of Ashland, WI (US 2)	1926		1,186	1,909	1,186	1,909	1279.8	985.8	Historic distance between Memphis and Ashland.
US 163	Des Moines, IA (US 69)	Oskaloosa, IA (US 63)	1934	1937			60	97		58.8
US 64	Teec Nos Pos, AZ (US 160)	South of Nags Head, NC (US 158)	1926		2,326	3,743	2,326	3,743	2332.9	2332.9
US 164			1928	1930			252	406		260
US 164			1966	1970			274	441		260
US 264	Raleigh, NC (I-440, US 64)	Southwest of Nags Head, NC (US 64)	1932		219	352	219	352	215.7	226.9	Historic extent to Whalebone Jct. NC
US 65	Clayton, LA (US 425)	Albert Lea, MN (I-35, I-90)	1926		969	1,559[p]	1,518	2,443	960.1	1236.8	Historic extent north to Minneapolis and south to New Orleans.
US 165	Iowa, LA (US 90)	Northeast of Little Rock, AR (US 70)	1926		412	663	412	663	403	403
US 66			1926	1985			2,448	3,940	2250	2334	Maximum extent was 2351, but only from 1935-1937.
US 166	South Haven, KS (US 81)	Southwest of Joplin, MO (I-44)	1926		166	267	248	399	162	162
US 266	Henryetta, OK (US 62, US 75)	Warner, OK (US 64)	1926		43	69[q]	130	209	43.0	135.3	Historic extent to OKC.
US 366			1926	1932			437	703		431
US 366			1932	1939			73	117		65.6
US 466			1926	1971			526	847		526
US 566			1926	1931			118	190		107
US 666			1926	2003			605	974		601.5	Mileage from Monticello to Douglas.
US 67	Mexico (Presidio, TX)	Sabula, IA (US 52)	1926		1,560	2,511	1,634	2,630	1547.4	1590.9	Historic mileage to Dubuque IA.
US 167	Abbeville, LA	Hardy, AR (US 62, US 412)	1926		499	803	509	819	504.2	514.4	Historic extent to Hardy AR.
US 68	Reidland, KY (US 62)	Findlay, OH (I-75)	1926		560	901	602	969	552.1	607.2	Historic extent from Paducah to Toledo.
US 168			1926	1934			137	220		116
US 69	Port Arthur, TX	Albert Lea, MN	1926		1,136	1,828	1,141	1,836	1130.7	1133.8	Historic extents to city centers of Albert Lea and Port Arthur.
US 169	Tulsa, OK (US 64)	Virginia, MN (US 53)	1930		975	1,569	1,149	1,849	966.7	966.7	Historically extended a little farther south (Glenpool) and farther north (I-Falls), but not during the same timeframe.
US 70	Globe, AZ (US 60)	Atlantic, NC	1926		2,385	3,838	2,915	4,691	2365.6	2842.9
US 170			1926	1931			215	346		206
US 270	Liberal, KS (US 54, US 83)	Northwest of Pine Bluff, AR (I-530, US 65)	1930		643	1,035	772	1,242	642.8	759.2	Historic extent between downtown Pine Bluff and Syracuse KS.
US 270			1926	1929			65	105		68.0
US 370			1926	1939			289	465		270
US 470			1926	1931			73	117		65.6
US 71	West of Krotz Springs, LA (US 190)	Canada (International Falls, MN)	1926		1,532	2,466	1,694	2,726	1515.7	1559.1	Historic extent to Port Allen LA.
US 171	Lake Charles, LA (US 90)	Shreveport, LA (US 79, US 80)	1926		179	288	191	307	178	182
US 271	Tyler, TX	Fort Smith, AR (US 71 Bus.)	1926		299	481	495	797	296.2	491.1	Historic extent to Beaumont TX.
US 371	Southwest of Coushatta, LA (I-49)	De Queen, AR (US 59, US 70, US 71)	1994		246	396	246	396	217.7	217.7
US 371			1931	1971			131	211		128
US 72	Memphis, TN (US 64, US 70, US 79)	Chattanooga, TN (US 11, US 41, US 64, US 127)	1926		432	695	432	695	318.0	318.0
US 73	West of Kansas City, KS (US 24, US 40)	North of Dawson, NE (US 75)	1926		112	180	725	1,167	113.2	676.2	Historic extent north to South Sioux City, and south to Atoka (via 73E).
US 74	Chattanooga, TN (I-24, I-75)	Wrightsville Beach, NC	1926		524	843	524	843	496.9	516.0	Historic distance is same as official distance, although the westernmost 19.1 miles are unsigned.
US 75	Dallas, TX (I-30, I-45, US 67)	Canada (Noyes, Minnesota)	1926		1,239	1,994	1,617	2,602	1234.8	1523.8	Historic extent to Galveston TX.
US 175	Jacksonville, TX (US 69)	Dallas, TX	1931		114	183	116	187	109.9	113.3	Current distance uses new (2020) terminus in Dallas; historic extent to downtown Dallas.
US 275	West of Rock Port, MO (US 136)	O'Neill, NE (US 20, US 281)	1931		266	428	346	557	266.3	347.1	Historic extent to St. Joseph MO.
US 76	Chattanooga, TN (US 11, US 64, US 72)	Wrightsville Beach, NC	1926		547	880	550	885	538.1	538.1
US 176	Hendersonville, NC (US 25 Bus.)	Goose Creek, SC (US 52)	1926		229	369	243	391	237.2	237.2
US 276	North of Waynesville, NC (I-40)	Mauldin, SC (I-385)	1932		108	174	210	338	106.3	136.3	Historic extent to I-26 at Clinton SC.
US 77	Mexico (Brownsville, TX)	Sioux City, IA (I-29)	1926		1,116	1,796	1,525	2,454	1303.0	1530.6	Historic extent to Ortonville MN.
US 177	Madill, OK (US 70)	South Haven, KS (US 81)	1927		233	375	233	375	233.6	233.6
US 277	Carrizo Springs, TX (US 83)	Newcastle, OK (I-44, US 62)	1928		633	1,019	664	1,069	631.3	645.4	Historic extent to OKC.
US 377	Del Rio, TX (US 90, US 277)	Stroud, OK	1930		478	769	478	769	601.4	601.4	Figure includes 124.7 unauthorized (but signposted) miles between Madill and Stroud.
US 78	Memphis, TN (US 64, US 70, US 79)	Charleston, SC (US 17)	1926		715	1,151	736	1,184	700.8	700.8
US 178	Northwest of Summerville, SC (US 78)	Rosman, NC (US 64)	1932		237	381	237	381	238.9	238.9
US 278	Wickes, AR (US 59, US 71)	Hilton Head Island, SC	1952		1,077	1,733	1,077	1,733	1073.9	1077.3	Historic distance via original 278 through Hilton Head.
US 378	Washington, GA (US 78)	Conway, SC (US 701)	1952		234	377	234	377	232.1	232.1
US 79	Austin, TX (I-35, US 290)	Russellville, KY (US 68)	1935		873	1,405	886	1,426	870.5	889.3	Historic extent to Austin.
US 80	Dallas, TX (I-30)	Tybee Island, GA	1926		1,032	1,661	2,747	4,421	1030.4	2538.4
US 180	Valle, AZ (SR 64)	East of Weatherford, TX (I-20)	1943		1,127	1,814	1,135	1,827	1111.6	1146.1	Historic extents to Handley TX and Grand Canyon.
US 180			1926	1935			336	541		303
US 280	Birmingham, AL (I-20, I-59, US 31)	Northwest of Savannah, GA (US 80)	1931		392	631	416	669	388.5	388.5	Historically went further east to Savannah, but at the time its west end was in Columbus GA.
US 380	San Antonio, NM (I-25, US 85)	Greenville, TX (I-30, US 67, US 69)	1932		673	1,083	673	1,083	672.9	672.9
US 81	North of Fort Worth, TX (I-35W, US 287)	Canada (Pembina, ND)	1926		1,234	1,986	1,769	2,847	1222.6	1653.6	Historic distance calculated by measuring I-35 from current terminus to Laredo border crossing.
US 181	Corpus Christi, TX (I-37)	San Antonio, TX (I-35, US 281)	1926		149	240	163	262	135.9	146.3	Historic extent to Plaza in San Antonio.
US 281	Brownsville, TX (Bus. US 77, TX 48)	Canada	1931		1,872	3,013	1,872	3,013	1865.6	1867.9	Historic mileage to border crossing in Brownsville.
US 82	Las Cruces, NM (US 70)	Southwest of Brunswick, GA (I-95, US 17)	1932		1,680	2,704	1,709	2,750	1598.3	1628.9	Historic mileage is to Midway GA.
US 83	Mexico (Brownsville, TX)	Canada	1926		1,894	3,048	1,904	3,064	1882.2	1882.2
US 183	Refugio, TX (US 77)	West of Presho, SD (I-90, US 83)	1930		1,035	1,666	1,269	2,042	1244.3	1154	Historic distance is from Vivian SD to Junction TX.
US 283	Brady, TX (US 87, US 190, US 377)	Lexington, NE (US 30)	1931		730	1,175	799	1,286	720.4	793.0	Historic extent to Junction TX.
US 383			1941	1982			175	282		165.9
US 84	Pagosa Springs, CO (US 160)	Southeast of Midway, GA (I-95)	1926		1,919	3,088	2,064	3,322	1905	1884	Historic mileage is Pagosa to Brunswick.
US 85	Mexico (El Paso, TX)	Canada	1926		1,479	2,380	1,582	2,546	1477	1477
US 185			1926	1934			124	200		116	Distance assumes downtown Cheyenne terminus.
US 285	Sanderson, TX (US 90)	Denver, CO (I-25, US 87)	1934		835	1,344	847	1,363	844.6	853.3	Historic extent to Aurora CO.
US 285			1926	1934			133	214		130
US 385	Big Bend National Park, TX	Deadwood, SD (US 85)	1958		1,206	1,941	1,206	1,941	1198.7	1198.7
US 385			1926	1935			773	1,244		743.1	Distance from Raton to San Antonio.
US 485			1926	1931			164	264		164	Distance assumes Raton terminus.
US 87	Port Lavaca, TX (SH 238	West of Havre, MT (US 2)	1926		1,998	3,215	2,036	3,277	2006.1	2006.1	Measured 2020, includes Big Spring TX bypass.
US 187	Rock Springs, WY	Northeast of Jackson, WY (US 26, US 89, US 191, US 287)	1926	1982 (see note)	207	333	401	645		207	Wyoming does not sign US 187, but it appears in the 1989 log, completely concurrent with US 191 except for a short piece in Rock Springs
US 287	Port Arthur, TX Yellowstone National Park, MT	Yellowstone National Park, WY Choteau, MT (US 89)	1934		1,891	3,043	1,901	3,059	1885.7	1885.7	Mileage is combined total of two disconnected segments. Implied mileage through Yellowstone NP brings the total to 1954.5
US 287 north	Yellowstone National Park, MT	Choteau, MT (US 89)	1965		1,891	3,043	1,901	3,059	281.2	281.2	North segment only
US 287 south	Port Arthur, TX	Yellowstone National Park, WY	1965		1,891	3,043	1,901	3,059	1604.5	1604.5	South segment only
US 89	Flagstaff, AZ (US 180) Yellowstone National Park, MT	Yellowstone National Park, WY Canada	1926		1,247	2,007	1,685	2,712	1239	1655	Mileage is combined total of two disconnected segments. Implied mileage through Yellowstone increases totals to 1333.8 and 1749.8.
US 89 north	Yellowstone National Park, MT	Canada	1934		1,247	2,007	1,685	2,712	399.7	399.7	North segment only
US 89 south	Flagstaff, AZ	Yellowstone National Park, WY	1934		1,247	2,007	1,685	2,712	839.3	880.9	South segment only
US 189	Provo, UT (I-15)	Jackson, WY (US 26, US 89, US 187, US 191)	1938		322	518	322	518	312.1	312.1	Utah does not sign US 189 along I-80 east of Silver Creek Jct.
US 189			1928	1938			30	48		29.9
US 90	Van Horn, TX (I-10)	Jacksonville Beach, FL	1926		1,633	2,628	1,697	2,731	1621.4	1621.4	Was 1674.9, but only from 1939-1940.
US 190	West of Iraan, TX (I-10)	Southeast of Slidell, LA (US 90)	1926		875	1,408	875	1,408	867.5	867.5
US 290	Southeast of Junction, TX (I-10)	Northwest of Houston, TX (I-610)	1926		276	444	591	951	265.5	556	Historic extent to Davis Mtn. Jct. TX
US 91	Brigham City, UT (I-15, I-84)	Southwest of Idaho Falls, ID (US 26)	1926		163	262	1,468	2,363	167.6	1430.6	Historic extent north to Canada and south to Long Beach.
US 191	Mexico (Douglas, AZ) Yellowstone National Park, MT	Yellowstone National Park, WY Canada	1926		1,657	2,667[r]	1,905	3,066	1651.3	1651.3	Mileage is combined total of two disconnected segments. Implied mileage through Yellowstone NP brings the total to 1720.1
US 191 north	Yellowstone National Park, MT	Canada	1981		1,657	2,667[s]	1,905	3,066	440.0	440.0	North segment only
US 191 south	Mexico (Douglas, AZ)	Yellowstone National Park, WY	1981		1,657	2,667[t]	1,905	3,066	1211.3	1211.3	South segment only
US 491	Gallup, NM (I-40)	Monticello, UT (US 163, US 191)	2003		198	319	198	319	193.7	193.7	Formerly known as US 666
US 92	St. Petersburg, FL	Daytona Beach, FL	1926		177	285	180	290	181.4	181.4
US 192	Southeast of Clermont, FL (US 27)	Indialantic, FL	1926		75	121	75	121	74.6	74.6
US 93	Wickenburg, AZ (US 60)	Eureka, MT – Canada (BC 93)	1926		1,346	2,166	1,346	2,166	1353.4	1353.4
US 94			1926	1949			110	177		108.2
US 95	Mexico (San Luis, AZ)	Eastport, ID – Canada (BC 95)	1926		1,574	2,533	1,574	2,533	1561.9	1561.9
US 195	North of Lewiston, ID (US 95)	Spokane, WA (I-90, US 2, US 395)	1926		95	153	186	299	93.7	171.7	Historic extent to Sandpoint ID.
US 295	East of Dodge, WA (US 12)	Colfax, WA (US 195)	1926	1968			45	72		43.6
US 395	Southwest of Victorville, CA (I-15)	South of Christina Lake, BC, Canada (BC 395)	1926		1,305	2,100	1,490	2,398	1303.7	1436.7	Historic extent to San Diego.
US 96	Port Arthur, TX	Tenaha, TX (US 59, US 84)	1939		170	274	171	275	165.4	167.4	Historic extent to downtown Port Arthur.
US 96			1926	1939			371	597		369.6	Maximum extent (Rosenburg-Brownsville)
US 97	Weed, CA (I-5)	Osoyoos, BC, Canada (BC 97)	1926		663	1,067	681	1,096	664.7	664.7
US 197	Southwest of Shaniko, OR (US 97)	North of Dallesport, WA (SR 14)	1952		64	103	87	140	63.3	81.0	Historic distance to Maryhill WA.
US 98	Bude, MS (US 84)	West Palm Beach, FL (US 1)	1933		939	1,511	973	1,566	928.0	962.5	Historic extent between Bude and Natchez is still signed as US 98 in several places.
US 99	Calexico, CA Mexicali, Mexico	Blaine, WA – Canada (BC 99)	1926	1972			1,569	2,525	1470	1470	Measured along I-5 from Calexico to Blaine, except CA 99 thru Central Valley.
US 199	Crescent City, CA (US 101)	Grants Pass, OR (I-5)	1926		80	129	86	138	79.6	80.8
US 299			1934	1964			295	475		279.5
US 399			1934	1964			136	219		127
US 101	Los Angeles, CA (I-5) Formerly Mexico (San Ysidro, CA)	Olympia, WA (I-5)	1926		1,519	2,445	1,896	3,051	1520.4	1653.4	Historic mileage calculated by measuring I-5 from current terminus to San Ysidro.
US 163	Kayenta, AZ (US 160)	East of Green River, UT (I-70, US 6, US 50, US 191)	1971		201	323	201	323	64.6	200.7	Historic extent to Crescent Jct. UT
US 400	Granada, CO (US 50, US 385)	Southwest of Joplin, MO (I-44)	1994		477	768 [5]	477	768	481	483
US 412	Springer, NM (I-25, US 85)	Columbia, TN (I-65)	1982		1,131	1,820	1,131	1,820	1115.4	1115.4
US 425	Natchez, MS (US 61, US 98)	Pine Bluff, AR (I-530, US 65)	1989		219	352	219	352	215.4	215.4

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