Delaware State Route System
Standard route shields
Highway names
Interstates	Interstate X (I-X)
US Highways	U.S. Route X (US X)
State	Delaware Route X (DE X)
System links
Delaware State Route System List Byways

The following is a list of numbered routes in Delaware, consisting of Interstate Highways, U.S. Routes, and state routes. The Delaware Department of Transportation is responsible for maintaining numbered roads in Delaware. State routes in Delaware use the circular highway shield. Delaware's numbering system mirrors that of U.S. Highways in that odd numbered highways travel north-south and even numbered routes go east-west. The numbers increase in value as one goes south and west respectively. There are some exceptions, however, mainly with routes from other states keeping their number as they enter Delaware, hence breaking the pattern.

History

The first numbered routes in Delaware came in 1925 with the designation of the U.S. Highway System, in which US 13, US 40, and US 113 were legislated to run through the state.^[1] In 1930 and again in 1932, the Delaware State Highway Department recommended giving numbers to state roads to supplement the existing U.S. Highway System.^[2][3] By 1936, Delaware began assigning numbers to state routes.^[4] In 1956, the Interstate Highway System was created, with under 40 miles of Interstate highway legislated in New Castle County.^[5]

Interstate Highways

Number	Length (mi)[6]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I-95	23.43	37.71	I-95 at Maryland border near Newark	I-95 at Pennsylvania border near Claymont	01956-01-011956[7]	current
I-295	5.71	9.19	I-95 / I-495 / US 202 at Newport	I-295 / US 40 at New Jersey border near Wilmington Manor	01959-01-011959[8]	current
I-495	11.47	18.46	I-95 / I-295 / US 202 at Newport	I-95 / DE 92 at Claymont	01962-01-011962[9]	current	I-95 was routed along I-495 from 1979-1980 during a major reconstruction.
I-895	10.78	17.35	I-95 at Newport	I-95 at Claymont	01979-01-011979[10]	01980-01-011980[11]	Temporary designation for I-95 through Wilmington during a major reconstruction
Former       Proposed and unbuilt

U.S. Highways

Mainline routes

Number	Length (mi)[6]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 9	31.04	49.95	US 13 at Laurel	Cape May–Lewes Ferry at Lewes	01974-01-011974[12][13]	current	Replaced DE 28 between Laurel and Georgetown and DE 18 between Georgetown and Five Points
US 13	103.33	166.29	US 13 at Maryland border at Delmar	US 13 at Pennsylvania border near Claymont	01926-01-011926[14]	current
US 40	17.18	27.65	US 40 at Maryland border near Glasgow	I-295 / US 40 at New Jersey border near Wilmington Manor	01926-01-011926[14]	current
US 113	37.26	59.96	US 113 at Maryland border at Selbyville	DE 1 near Milford	01926-01-011926[14]	current	Route truncated from Dover to Milford in 2004
US 122	6.15	9.90	US 13 at Wilmington	US 122 at Pennsylvania border near Brandywine	01926-01-011926[14]	01934-01-011934[4][15]	Replaced by US 202
US 202	12.65	20.36	US 13 / US 40 / DE 141 near New Castle Airport	US 202 at Pennsylvania border near Brandywine	01934-01-011934[4][15]	current	Replaced US 122
US 301	11.29	18.17	US 301 at Maryland border near Warwick, MD	DE 1 at Biddles Corner	01959-01-011959[8]	current	Four-lane freeway that is tolled.
US 301N	11.2	18.0	US 301 / DE 71 / DE 896 at Summit Bridge	US 13 / US 40 / US 301 at State Road	01959-01-011959[8]	01983-01-011983[16]
US 301S	10.69	17.20	US 301 / DE 71 / DE 896 at Summit Bridge	US 13 / US 40 / US 301 at State Road	01959-01-011959[8]	01983-01-011983[16]
Former       Proposed and unbuilt

Special routes

Number	Length (mi)[6]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US 9 Bus.	3.36	5.41	US 9 / DE 1 / DE 404 at Nassau	US 9 at Lewes	01974-01-011974[13]	current	Replaced DE 18
US 9 Truck	6.1	9.8	US 9 / US 113 / DE 404 Truck at Georgetown	US 9 / DE 404 near Georgetown	01983-01-011983[17][18]	current
US 13 Alt.	16.67	26.83	MD 455 at Delmar	US 13 near Seaford	01954-01-011954[19]	01957-01-011957[20]	Former alignment of US 13
US 13 Alt.	2.46	3.96	US 13 / DE 404 at Bridgeville	US 13 at Bridgeville	01957-01-011957[20]	01970-01-011970[21]	Former alignment of US 13. Replaced by US 13 Bus.
US 13 Alt.	5.69	9.16	US 13 / DE 15 near Canterbury	US 13 at Camden	01954-01-011954[19]	current	Former alignment of US 13
US 13 Alt.	3.86	6.21	US 13 at Rodney Village	US 13 at Dover	01959-01-011959[8]	current	Former alignment of US 13
US 13 Alt.	8.70	14.00	US 13 / US 202 at Wilmington	US 13 at Claymont	01939-01-011939[22]	01970-01-011970[21]	Replaced by US 13
US 13 Bus.	2.46	3.96	US 13 / DE 404 / DE 404 Bus. at Bridgeville	US 13 / DE 404 at Bridgeville	01970-01-011970[21]	current	Former alignment of US 13 and US 13 Alt.
US 13 Bus.	8.19	13.18	I-495 / US 13 at Wilmington	US 13 at Claymont	01970-01-011970[21]	current	Former alignment of US 13.
US 13 Byp.	8.19	13.18	US 13 near Claymont	US 13 Byp. at Pennsylvania border near Claymont	01950-01-01c. 1950[23]	01970-01-01c. 1970[24]
US 113 Alt.	9.10	14.65	US 113 / DE 1 at Little Heaven	US 13 / US 113 at Dover	01936-01-011936[4]	02004-01-012004[25]	Former alignment of US 113 south of Dover
US 301 Truck	9.10	14.65	US 301 / DE 71 / DE 896 at Mount Pleasant	US 13 / US 40 / US 301 at State Road	—	02001-01-012001
Former

State routes

Zdroj:https://en.wikipedia.org?pojem=List_of_numbered_routes_in_Delaware
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Number	Length (mi)[6]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
DE 1	102.63	165.17	MD 528 at Fenwick Island	I-95 / DE 7 at Christiana	01974-01-011974[26]	current	Longest state route, extended past Milford in 1991, previously used alignment of US-13 between gaps in expressway north of Dover between 1991 and 2003
DE 1A	2.01	3.23	DE 1 at Dewey Beach	DE 1 at Rehoboth Beach	01974-01-011974[26]	current	Former DE 14A
DE 1B	0.75	1.21	DE 1 at Rehoboth Beach	DE 1A at Rehoboth Beach	01974-01-011974[26]	current
DE 1D	3.92	6.31	DE 1 / DE 24 at Midway	US 9 / DE 23 / DE 404 at Nassau	01996-01-011996[27]	current
DE 1 Bus.	3.90	6.28	DE 1 near Milford	US 113 / DE 1 near Milford	01977-01-011977[28]	current
DE 2	10.81	17.40	DE 72 / DE 273 near Newark	DE 52 at Wilmington	01936-01-011936[4]	current	Until 2013, continued west along DE-72, DE-4, and DE-279 to the Maryland line
DE 2 Bus.	2.91	4.68	DE 2 / DE 4 / DE 896 at Newark	DE 2 / DE 72 / DE 273 at Newark	01990-01-011990[29]	02013-01-012013[30]
DE 3	6.15	9.90	I-495 at Edgemoor	DE 92 at Hanbys Corner	01968-01-011968[31]	current
DE 4	14.08	22.66	DE 279 / DE 896 at Newark	DE 48 at Wilmington	01967-01-011967[32]	current
DE 4	8.08	13.00	MD 299 near Warwick, MD	US 13 at Odessa	01938-01-011938[33]	01957-01-011957[19][20]	Replaced by DE 299
DE 5	19.49	31.37	River Road at Oak Orchard	DE 1 near Milton	01938-01-011938[33]	current
DE 5 Alt.	3.8	6.1	DE 5 near Milton	DE 5 / DE 16 near Milton	01998-01-011998[34]	current
DE 6	17.38	27.97	MD 291 near Blackiston	Delaware Avenue at Woodland Beach	01936-01-011936[4]	current
DE 7	16.87	27.15	US 13 / DE 72 in Wrangle Hill	SR 3013 at Pennsylvania state line near Hockessin	01936-01-011936[4]	current
DE 8	17.15	27.60	MD 454 at Marydel	DE 9 near Little Creek	01936-01-011936[4]	current
DE 9	57.83	93.07	DE 1 near Dover Air Force Base	DE 2 at Wilmington	01936-01-011936[4]	current
DE 9A	2.0	3.2	DE 9 at Wilmington	US 13 / DE 9 at Wilmington	01971-01-011971[35]	current	Official length is 0.78 miles (1.26 km) between DE 9 and Christiana Avenue
DE 9 Truck	5.7	9.2	DE 9 near Tybouts Corner	DE 9 / DE 141 / DE 273 at New Castle	—	—
DE 10	16.12	25.94	MD 287 at Sandtown	DE 1 at Dover Air Force Base	01936-01-011936[4]	current
DE 10 Alt.	9.23	14.85	DE 10 at Willow Grove	DE 10 at Highland Acres	01988-01-011988[36]	current
DE 11	6.93	11.15	MD 302 near Templeville, MD	DE 300 near Kenton	01936-01-011936[4]	current
DE 12	16.35	26.31	MD 314 in Whiteleysburg	DE 1 near Frederica	01936-01-011936[4]	current
DE 14	19.47	31.33	MD 317 near Burrsville, MD	DE 1 near Milford