| Delaware Route 1 | ||||
|---|---|---|---|---|
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DE 1 highlighted in red
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| Route information | ||||
| Maintained by DelDOT and USACE | ||||
| Length: | 103.02 mi (165.79 km) | |||
| Existed: | 1974 – present | |||
| History: | Completed in 2003 | |||
| Major junctions | ||||
| South end: |
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| North end: |
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| Location | ||||
| Counties: | Sussex, Kent, New Castle | |||
| Highway system | ||||
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| Delaware Route 1A | |
|---|---|
| Location: | Dewey Beach-Rehoboth Beach |
| Length: | 2.92 mi (4.70 km) |
| Existed: | 1974–present |
| Delaware Route 1B | |
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| Location: | Rehoboth Beach |
| Length: | 1.11 mi (1.79 km) |
| Existed: | 1974–present |
| Delaware Route 1D | |
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| Location: | Midway-Five Points |
| Length: | 3.3 mi (5.3 km) |
| Existed: | 1996–present |
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Delaware Route 1 Business |
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| Location: | Milford |
| Length: | 3.90 mi (6.28 km) |
| Existed: | 1977–present |
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US 9 / DE 404 in Five Points
US 113 in Milford
DE 9 near Dover AFB
US 13 in Dover![]()
US 13 / DE 896 near Odessa
US 13 in Tybouts Corner
US 40 in Bear
DE 273 near Christiana
DE 7 in Christiana