Wikipedia:WikiProject U.S. Roads/Delaware/All-time list

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Given are the years of the first and last Delaware or Maryland the routes appear on. These are not always the exact years the routes were created or eliminated. Note that early Delaware maps seem to be missing some routes, hence the Maryland maps are also used.

from to notes
DE 1 1973
← 14 (part) 		now initially overlapped 14; only independent piece was the Milford Bypass
DE 1A 1974
← 14A 		now initially overlapped 14A; Milford piece appeared in 1981 as an overlap with 14
DE 1B 1974 now never appears on state maps, but appears on a 1974 Maryland map
DE 1C never never where?
DE 1D 1996 now? not in 2012 traffic counts
DE 2 1936 now
DE 3 1968 now
DE 4 1967 now
DE 4 1938 1954
→ 299 		probably existed in 1936
DE 5 1938
← 22 		now
DE 5A 2001 now? not in 2012 traffic counts
DE 6 1936 now
DE 7 1936 now
DE 8 1936 now
DE 9 1936 now
DE 9A 1971 now
DE 10 1936 now
DE 10A 1988 now
DE 11 1936 now
DE 12 1936 now
DE 14 1936 now
DE 14A 1942?
← 14 (part) 		1974
→ 1A 		unlabeled until 1966
DE 15 1984 now
DE 16 1936 now
DE 17 1936 now
DE 18 1936 now
DE 20 1936 now
DE 22 1936? 1936?
→ 5 		not on any state maps, but appears on a 1930s county map
DE 23 1994 now
DE 24 1936 now
DE 24A 2006 now? not in 2012 traffic counts
DE 26 1936 now
DE 28 1936 1973
→ US 9 (part)
DE 30 1936? 1936? not on any state maps, but appears on a 1930s county map
DE 30 1938 now
DE 30A 1999 2012 not in 2012 traffic counts; still on maps until 2017
DE 32 1968 1968
→ 54
DE 34 1976 2019
DE 36 1938 now
DE 37 1985 now
DE 41 1936 now numbered to match PA
DE 42 1936 now
DE 44 1936 now
DE 48 1936 now numbered to match NJ
DE 52 1936 now numbered to match PA
DE 54 1969
← 32 		now numbered to match MD
DE 54A 2006 now? not in 2012 traffic counts
DE 58 1985 now why this number?
DE 62 1981 now why this number?
DE 71 1938 now numbered to match MD
DE 72 1946 now why this number?
DE 82 1952 now numbered to match PA
DE 92 1968 now why this number?
DE 100 1938 now numbered to match PA
DE 141 1952 now
DE 202 1981
← US 202 (part) 		now
DE 261 1938 now numbered to match PA
DE 273 1936 now numbered to match MD
DE 279 2013
← 2 (part) 		now numbered to match MD
DE 286 1994 now numbered to match MD
DE 299 1957
← 4 		now numbered to match MD
DE 300 1936 now numbered to match MD
DE 404 1936 now numbered to match MD
DE 404A 1990 1997
→ 404 (part)
DE 491 1936 now numbered to match PA
DE 796 1936 1936
→ 896 		numbered to match PA
DE 896 1938
← 796 		now numbered to match PA
DE 896A when? 2012 some signage still up?
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