Delaware 1D

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Delaware 1D forms a suburban loop southeast from Delaware 23 (Beaver Dam Road) and Belltown to Midway by way of Plantation Road and Delaware 24 (John J. Williams Highway).1 The state route was commissioned in the early 1990s to provide an alternate to Delaware 1.

SR 1A and SR 1B are located to the southeast at Rehoboth Beach. There is no SR 1C, though the designation may be reserved for a future route.1 SR 1D formerly overlapped with SR 24 Alternate along Plantation Road. Signs for SR 24 Alt were still posted along Plantation Road as of January 2017.

Delaware 1D - 2015 Annual Average Daily Traffic (AADT)

  • 10,011 - SR 23 to Cedar Grove Road
  • 10,452 - Cedar Grove Road to SR 24
  • 19,008 - Warrington Road to SR 1

Delaware 1D north & 24 west
John J. Williams initially carries four overall lanes from SR 1 (Coastal Highway) to Hudson Way and the north entrance to Rehoboth Mall. Future road work will extend the four lane section of SR 24 south to the split with SR 1D (Plantation Road). Photo taken 01/16/17.
Delaware 1D partitions with Delaware 24 west for Plantation Road to run along the west side of the Midway and Five Points area. The route formerly overlapped with Delaware 24 Alternate, though remnant signage is still posted. Photo taken 01/16/17.
Plantation Road provides an alternate route to Delaware 1 northward to Delaware 23 south at Belltown. Warrington Road ties into the traffic light with Delaware 24 from Old Landing Road and the Breezewood subdivision. Photo taken 01/16/17.
Delaware 1D north
Delaware 1D reassurance marker posted as Plantation Road heads north from Delaware 24 (John J. Williams Highway) and Warrington Road by the Summercrest subdivision. A remnant banner alludes to former Delaware 24 Alt. Photo taken 01/16/17.
Open land spreads to the west across from Aydelotte Estates as Plantation Road approaches Cedar Grove Road. Photo taken 01/16/17.
A staggered intersection with Cedar Grove Road west and Postal Drive east was reconfigured into a conventional intersection with traffic lights during a $3.28 million construction project underway from December 2014 to summer 2015.2 Delaware 1D was expanded to include bike lanes and sidewalks during the project. Photo taken 01/16/17.
Reassurance markers for Delaware 1D & 24 Alt appear north of Cedar Grove Road. Plantation Road passes between the Sandy Brae and The Plantations subdivisions along the ensuing stretch. Photo taken 01/16/17.
Robinsonville Road ties into Delaware 1D (Plantation Road) north from Goslee Mill ahead of this shield assembly. Photo taken 01/16/17.
Construction underway in early 2017 expanded the SR 1D signalized intersection with Salt Marsh Boulevard and Shady Road at the Henlopen Landing community. Photo taken 01/16/17.
Delaware 1D (Plantation Road) makes a nearly 90 degree turn to end opposite the southbound beginning of Delaware 23 (Beaver Dam Road). Photo taken 01/16/17.
The curve of Plantation Road rounds Henlopen Landing and parallels U.S. 9 & Delaware 404 as they intersect Delaware 1 (Coastal Highway) at Five Points. Photo taken 01/16/17.
A short connector links the adjacent U.S. 9 & SR 404 with SR 1D south and SR 23 south. Photo taken 01/16/17.
SR 1D ends at a stop sign, while a free flow movement takes drivers from U.S. 9 onto Plantation Road south. SR 23 commences a nearly 15-mile route south to Hollymount and Masseys Landing. Photo taken 01/16/17.
Delaware 1D south & 24 east
Delaware 24 reassurance marker posted after the merge with Delaware 1D south. John J. Williams Highway expands with a center turn lane to Bryn Mawr Drive and the Maplewood subdivision. Photo taken 01/16/17.
2 photos
2 photos
Delaware 1D south combines with Delaware 24 (John Williams Parkway) east for a 0.72 mile overlap to their joint terminus at Delaware 1 (Coastal Highway). A pair of end shields were posted for the two routes; a replacement made by 2008 combined the assembly. Photo taken 02/18/02. Second photo taken 01/16/17.
Construction in 2016-17 for a new Royal Farms gas station at the southwest corner of Delaware 24 at Coastal Highway removed both sign assemblies for Delaware 1. Coastal Highway heads northwest toward Lewes and Five Points and south to Rehoboth Beach and Dewey Beach. Photo taken 01/16/17.


  1. Kent, George III (DelDOT), email: "RE: Delaware State Route questions." May 27, 2004.
  2. Cedar Grove Road/Postal Lane Intersection Realignment Project, DelDOT project web site, accessed January 20, 2017.

Photo Credits:

    02/18/02 by Adam Froehlig. 01/16/17 by AARoads.

Connect with:
Delaware 1
Delaware 23
Delaware 24
Delaware 24 Alternate

Page Updated 02-01-2017.