Work also took place on constructing a state highway running from the Maryland border in Delmar north to Dover. By 1920, most of the highway in Sussex County had been completed with the exceptions of a portion north of Laurel and a portion north of Bridgeville. In Kent County, the state highway was completed between the Sussex County border and Farmington. The portion between Farmington and Woodside was under contract by 1920 while the portion between Woodside and Dover was under proposal. By 1924, the entire length of the state highway between Delmar and Dover was completed. A bascule bridge over the Nanticoke River in Seaford was completed in March 1925. In 1925, recommendations were made to improve the South Market Street Causeway over the Christina River in Wilmington, which included a new bridge over the river. Construction on the drawbridge began in May 1926. In 1927, the new drawbridge, the four-lane South Market Street Bridge, opened over the Christina River on South Market Street in Wilmington, replacing a previous drawbridge that was only two lanes wide.