Del. Code tit. 29, § 406

Should it be thought desirable by the Office to widen and/or straighten or alter any street abutting upon any of the lands acquired under this chapter, it may cause to be laid off so much and such portion of the land so acquired as it deems necessary or proper to effect such widening, straightening or altering and shall cause a description thereof to be recorded in the office of the Recorder for Kent County and thereupon the land so described shall be deemed and held to be a dedication to the public for street uses and to be under and subject to the jurisdiction of the municipal authorities having supervision over the streets of the City of Dover without any further or other act, acceptance or consent.