Delaware Route 100
Encyclopedia
Delaware Route 100 is a state highway in New Castle County
, Delaware
. The route runs from Delaware Route 4
near Elsmere
to the Pennsylvania
border near Montchanin
, where it continues into Pennsylvania as Creek Road. At the Pennsylvania border, Delaware Route 100 used to connect to Pennsylvania Route 100
, however Pennsylvania Route 100 south of Exton was re-routed onto an expressway connector to end at U.S. Route 202
north of West Chester, Pennsylvania
in 2003 (thus no longer reaching the Delaware border). DE 100 was first designated in the 1930s to run from DE 52 to the Pennsylvania border. By the 1970s, it was extended south to DE 4. The route was realigned to follow parts of DE 48 and DE 141 by 1990.
of Race Street northbound and Dupont Road southbound. It follows these one-way streets briefly until it merges onto the four-lane, divided Dupont Road. It heads north into Elsmere
, crosses over CSX's Philadelphia Subdivision and then intersects Delaware Route 2. It then heads north as a two-lane, undivided road and intersects the eastern terminus of Delaware Route 34
just to the north of Elsmere. It then heads north and meets Delaware Route 48
along the western city limit of Wilmington
.
DE 100 heads west with DE 48 on the Lancaster Pike, passing through suburban areas. It then makes a right turn to head north along with Delaware Route 141
on the four-lane, divided Centre Road. The road eventually becomes Barley Mill Road and turns into an expressway, passing under a railroad line and intersecting Delaware Route 52
at a partial cloverleaf interchange in Greenville
. Just past the interchange, DE 100 departs from DE 141 by making a left turn onto Montchanin Road.
The route heads north on Montchanin Road, passing through wealthy suburban areas. It passes through the community of Montchanin
and continues north, passing by the back entrance to the Winterthur Museum. It then makes a left turn, retaining the name Montchanin Road, near the entrance to Brandywine Creek State Park
, where Delaware Route 92
continues straight on Thompson Bridge Road. DE 100 heads north to the Pennsylvania border, where it becomes Chadds Ford Road and continues north into Pennsylvania, paralleling the Brandywine Creek.
. DE 100 was extended south to DE 4 by 1971, following Dupont Road. The route was realigned to bypass a portion of Dupont Road by following DE 48 and DE 141 by 1990.
.
{| class=wikitable
!Location
!Mile
!Road
!Notes
|-
|rowspan=3|Elsmere
|0.00
|
|Southern terminus
|-
|0.73
|
|
|-
|1.41
|
|
|-
|rowspan=2|Wilmington
|1.64
|
|South end of DE 48 overlap
|-
|2.67
|
|North end of DE 48 overlap, south end of DE 141 overlap
|-
|rowspan=2|Greenville
|3.86
|
|Interchange
|-
|4.12
|
|North end of DE 141 overlap
|-
|rowspan=2|Montchanin
|6.26
|
|
|-
|8.97
|Chadds Ford Road north
|Pennsylvania state line, northern terminus
|-
New Castle County, Delaware
New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of 2010 its population was 538,479, an increase of 7.6% over the previous decade. The county seat is Wilmington. The center of population of Delaware is located in New Castle County, in the town of...
, Delaware
Delaware
Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania...
. The route runs from Delaware Route 4
Delaware Route 4
Delaware Route 4 is a state highway in New Castle County, Delaware. The route runs from Delaware Route 2 and Delaware Route 896 in Newark east to Delaware Route 48 in downtown Wilmington. What is now DE 4 was originally a county road that was paved in the 1930s...
near Elsmere
Elsmere, Delaware
Elsmere is a town in New Castle County, Delaware, United States. According to the 2010 Census, the population of the town is 6,131.-Geography:Elsmere is located at ....
to the Pennsylvania
Pennsylvania
The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...
border near Montchanin
Montchanin, Delaware
Montchanin is an unincorporated community in New Castle County, Delaware, United States. The community was named for Anne Alexandrine de Montchanin, mother of Pierre Samuel du Pont de Nemours. The Jacob Broom House, a National Historic Landmark, is located there....
, where it continues into Pennsylvania as Creek Road. At the Pennsylvania border, Delaware Route 100 used to connect to Pennsylvania Route 100
Pennsylvania Route 100
Pennsylvania Route 100 is a state highway in the U.S. state of Pennsylvania that runs from U.S. Route 202 in West Chester, Pennsylvania to Pennsylvania Route 309 in Pleasant Corners, Pennsylvania....
, however Pennsylvania Route 100 south of Exton was re-routed onto an expressway connector to end at U.S. Route 202
U.S. Route 202
U.S. Route 202 is a highway stretching from Delaware to Maine, also passing through the states of Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, and New Hampshire....
north of West Chester, Pennsylvania
West Chester, Pennsylvania
The Borough of West Chester is the county seat of Chester County, Pennsylvania, United States. The population was 18,461 at the 2010 census.Valley Forge, the Brandywine Battlefield, Longwood Gardens, Marsh Creek State Park, and other historical attractions are near West Chester...
in 2003 (thus no longer reaching the Delaware border). DE 100 was first designated in the 1930s to run from DE 52 to the Pennsylvania border. By the 1970s, it was extended south to DE 4. The route was realigned to follow parts of DE 48 and DE 141 by 1990.
Route description
Delaware Route 100 heads north from DE 4 on the one-way pairOne-way pair
A one-way pair, one-way couple, or just couplet is a pair of parallel, usually one-way streets that carry opposite directions of a signed route or major traffic flow, or sometimes opposite directions of a bus or streetcar route....
of Race Street northbound and Dupont Road southbound. It follows these one-way streets briefly until it merges onto the four-lane, divided Dupont Road. It heads north into Elsmere
Elsmere, Delaware
Elsmere is a town in New Castle County, Delaware, United States. According to the 2010 Census, the population of the town is 6,131.-Geography:Elsmere is located at ....
, crosses over CSX's Philadelphia Subdivision and then intersects Delaware Route 2. It then heads north as a two-lane, undivided road and intersects the eastern terminus of Delaware Route 34
Delaware Route 34
Delaware Route 34 , also known as Faulkland Road, is a state highway in New Castle County, Delaware. The route runs from an intersection with unnumbered Duncan Road, just west of Delaware Route 41, north of Prices Corner to Delaware Route 100 near Elsmere...
just to the north of Elsmere. It then heads north and meets Delaware Route 48
Delaware Route 48
Delaware Route 48 connects the City of Wilmington, Delaware to an intersection with Delaware Route 41 about from the Pennsylvania state line in Hockessin, Delaware....
along the western city limit of Wilmington
Wilmington, Delaware
Wilmington is the largest city in the state of Delaware, United States, and is located at the confluence of the Christina River and Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County and one of the major cities in the Delaware Valley...
.
DE 100 heads west with DE 48 on the Lancaster Pike, passing through suburban areas. It then makes a right turn to head north along with Delaware Route 141
Delaware Route 141
Delaware Route 141 is a bypass around the western suburbs of Wilmington, Delaware. Its northern terminus is an interchange with U.S. Route 202 and Delaware Route 261 in Fairfax, and its southern terminus is at Delaware Route 9 and Delaware Route 273 in New Castle...
on the four-lane, divided Centre Road. The road eventually becomes Barley Mill Road and turns into an expressway, passing under a railroad line and intersecting Delaware Route 52
Delaware Route 52
Delaware Route 52 is a state highway in New Castle County, Delaware. The route runs from U.S. Route 13 Business in Wilmington, Delaware north to Pennsylvania Route 52 at the Pennsylvania border near Centerville, Delaware. Even though the southern terminus is at US 13 Business, DelDOT has DE 52...
at a partial cloverleaf interchange in Greenville
Greenville, Delaware
Greenville is a census-designated place in New Castle County, Delaware, United States. The population was 2,326 at the 2010 census.-Geography:Greenville is located at ....
. Just past the interchange, DE 100 departs from DE 141 by making a left turn onto Montchanin Road.
The route heads north on Montchanin Road, passing through wealthy suburban areas. It passes through the community of Montchanin
Montchanin, Delaware
Montchanin is an unincorporated community in New Castle County, Delaware, United States. The community was named for Anne Alexandrine de Montchanin, mother of Pierre Samuel du Pont de Nemours. The Jacob Broom House, a National Historic Landmark, is located there....
and continues north, passing by the back entrance to the Winterthur Museum. It then makes a left turn, retaining the name Montchanin Road, near the entrance to Brandywine Creek State Park
Brandywine Creek State Park
Brandywine Creek State Park is a state park, located north of Wilmington, Delaware along the Brandywine Creek. Open year-round, it is in area and, before becoming a state park in 1965, was a dairy farm owned by the Du Pont family. It contains the first two nature preserves in Delaware. These...
, where Delaware Route 92
Delaware Route 92
Delaware Route 92 is a two to four-lane, east–west road that runs a short distance to the south of the Pennsylvania/Delaware State Line for most of its length and allows a direct connection between U.S. Route 202 in Talleyville, Delaware with I-95 in Claymont, Delaware, the two major...
continues straight on Thompson Bridge Road. DE 100 heads north to the Pennsylvania border, where it becomes Chadds Ford Road and continues north into Pennsylvania, paralleling the Brandywine Creek.
History
By 1920, what is now DE 100 existed as a county road. The route north of Kennett Pike was proposed as a state highway by 1924. The route was paved by 1931. By 1932, the state highway had been completed from Elsmere north to the Kennett Pike while the remainder was still a county route. When Delaware assigned state highways numbers by 1936, the road remained unnumbered. By 1938, DE 100 was designated to run from DE 52 in Greenville north to the Pennsylvania border, where it continued as PA 100Pennsylvania Route 100
Pennsylvania Route 100 is a state highway in the U.S. state of Pennsylvania that runs from U.S. Route 202 in West Chester, Pennsylvania to Pennsylvania Route 309 in Pleasant Corners, Pennsylvania....
. DE 100 was extended south to DE 4 by 1971, following Dupont Road. The route was realigned to bypass a portion of Dupont Road by following DE 48 and DE 141 by 1990.
Major intersections
The entire route is in New Castle CountyNew Castle County, Delaware
New Castle County is the northernmost of the three counties of the U.S. state of Delaware. As of 2010 its population was 538,479, an increase of 7.6% over the previous decade. The county seat is Wilmington. The center of population of Delaware is located in New Castle County, in the town of...
.
{| class=wikitable
!Location
!Mile
!Road
!Notes
|-
|rowspan=3|Elsmere
Elsmere, Delaware
Elsmere is a town in New Castle County, Delaware, United States. According to the 2010 Census, the population of the town is 6,131.-Geography:Elsmere is located at ....
|0.00
|
|Southern terminus
|-
|0.73
|
|
|-
|1.41
|
|
|-
|rowspan=2|Wilmington
Wilmington, Delaware
Wilmington is the largest city in the state of Delaware, United States, and is located at the confluence of the Christina River and Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County and one of the major cities in the Delaware Valley...
|1.64
|
|South end of DE 48 overlap
|-
|2.67
|
|North end of DE 48 overlap, south end of DE 141 overlap
|-
|rowspan=2|Greenville
Greenville, Delaware
Greenville is a census-designated place in New Castle County, Delaware, United States. The population was 2,326 at the 2010 census.-Geography:Greenville is located at ....
|3.86
|
|Interchange
|-
|4.12
|
|North end of DE 141 overlap
|-
|rowspan=2|Montchanin
Montchanin, Delaware
Montchanin is an unincorporated community in New Castle County, Delaware, United States. The community was named for Anne Alexandrine de Montchanin, mother of Pierre Samuel du Pont de Nemours. The Jacob Broom House, a National Historic Landmark, is located there....
|6.26
|
|
|-
|8.97
|Chadds Ford Road north
|Pennsylvania state line, northern terminus
|-