Delaware Route 9 (DE 9) is a state highway that runs from DE 1 near Dover Air Force Base in Kent County north to DE 2 in the city of Wilmington in New Castle County. DE 9 is a designated scenic highway known as the Delaware Bayshore Byway south of New Castle, running through mostly rural areas to the west of the Delaware Bay and the Delaware River as a two-lane undivided road. Between New Castle and Wilmington, DE 9 is a four-lane road that runs through urban and suburban areas. DE 9 passes through several cities and towns including Little Creek, Leipsic, Port Penn, Delaware City, and New Castle. DE 9 has an auxiliary route, DE 9A, that provides access to the Port of Wilmington. In addition, it has a truck route, DE 9 Truck, located to the south of New Castle.
DE 9 was first designated by 1936 to run from U.S. Route 113 (US 113, now DE 1) southeast of Dover north to US 13 in Smyrna, following its current alignment to Leipsic and Smyrna-Leipsic Road to Smyrna. In the 1950s, the route was extended north to US 13 Alt. (now US 13) in Wilmington, in which it was rerouted at Leipsic to follow its current alignment to Wilmington. DE 9 was extended further north to DE 2 by the 1970s. The route was rerouted to bypass downtown New Castle in the 1980s. The intersection with DE 1 was reconstructed into an interchange in 2009.
Route description
Dover Air Force Base to Delaware City
DE 9 begins at a diamond interchange with DE 1 just south of the toll road terminus at the south end of Dover Air Force Base in the city of Dover in Kent County. Past DE 1, the route heads north-northeast on two-lane undivided Bayside Drive. DE 9 soon reaches an intersection with Kitts Hummock Road; this road leads east to the John Dickinson Plantation, which is part of First State National Historical Park, and the community of Kitts Hummock on the Delaware Bay. Following this, the route passes between the runways of Dover Air Force Base to the west and farm fields to the east, leaving the city limits of Dover. Along this stretch, Heritage Road leads west to the Air Mobility Command Museum on the base grounds. After the air base, the road continues north through a mix of farmland and woodland with some homes to the west of the Little Creek Wildlife Area.
DE 9 intersects South Little Creek Road before it crosses the marshy Little River and enters the town of Little Creek, where the name changes to Main Street and it is lined with residences. The route comes to a junction with the eastern terminus of DE 8 as it leaves Little Creek and becomes Bayside Drive again. The road continues northwest through farmland with some trees and homes, passing to the southwest of Octagonal Schoolhouse before heading through the community of Cowgills Corner, where it crosses White Oak Road/Savannah Road. Past this junction, the route runs southwest of Chandelle Estates Airport. DE 9 curves to the north at the Leipsic Road/Squawigm Road intersection and enters the town of Leipsic. At this point, the route turns northwest, with the name becoming Denny Street, and runs past homes and businesses, curving north to intersect the eastern terminus of DE 42.
DE 9 heads into marshland and crosses the Leipsic River on a high-level bridge, leaving Leipsic. Here, the road becomes Smyrna-Leipsic Road and enters agricultural areas with some woods and homes. Smyrna-Leipsic Road splits to the northwest and the route continues north on Hay Point Landing Road, running to the west of the Bombay Hook National Wildlife Refuge, where the Allee House is located. DE 9 comes to an intersection with DE 6 as it passes through the Woodland Beach Wildlife Area, turning to the northwest as it heads through a mix of woods and marshland. The road continues to a high-level bridge over the Smyrna River.
Upon crossing the Smyrna River, DE 9 enters New Castle County and becomes Flemings Landing Road, heading through the community of Flemings Landing and passing through agricultural areas with some woods to the west of the Cedar Swamp Wildlife Area. The road runs to the north before curving northwest again. The route turns west onto Taylors Bridge Road and crosses the marshy Blackbird Creek. DE 9 curves to the north-northwest and passes through more rural areas with some residential subdivisions to the west. The route heads to the northwest before turning northeast onto Thomas Landing Road in Mathews Corners, with DE 299 continuing northwest on Taylors Bridge Road towards the town of Odessa, where the Odessa Historic District is located.
DE 9 runs between farmland to the north and housing developments to the south prior to turning north onto Thomas Corner Road. At the Old Corbit Road intersection, the road curves northeast as Silver Run Road and runs through agricultural areas before entering marshland and crossing the Appoquinimink River. After this, the route turns north to remain on Silver Run Road and passes through areas of farms, woods, and wetlands in the Augustine Wildlife Area a short distance to the west of the Delaware River, coming to a bridge over Silver Run. DE 9 turns east onto Bayview Road before turning north onto St. Augustine Road and following the west bank of the Delaware River. The route crosses Augustine Creek and passes through the residential community of Augustine Beach. The road reaches the community of Port Penn, where it is lined with homes. In Port Penn, the route turns west onto Market Street before turning north onto Delaware City Port Penn Road near the Port Penn Interpretive Center.
Upon leaving Port Penn, DE 9 heads through marshland with some fields and woods within the Augustine Wildlife Area. The route rises onto the Reedy Point Bridge, a cantilever truss bridge which carries it over the Chesapeake & Delaware Canal. After heading over the canal, the road crosses over Fort DuPont State Park, curving northwest and passing to the southwest of Fort DuPont and the Governor Bacon Health Center. The route comes to a roundabout with Polktown Place and Old Elm Avenue after the bridge. DE 9 continues into the city of Delaware City and becomes 5th Street, crossing the Delaware City Channel on a bridge before intersecting the eastern terminus of the Michael N. Castle Trail. Past the bridge, the road heads through residential areas with some businesses and intersects Clinton Street, which leads northeast to the Forts Ferry Crossing that provides access to Fort Delaware on Pea Patch Island, part of Fort Delaware State Park.
Delaware City to Wilmington
Upon leaving Delaware City, DE 9 continues west as Wrangle Hill Road, crossing Dragon Creek before passing between PBF Energy's Delaware City Refinery to the north and farm fields to the south. The route turns north onto River Road to head into the oil refinery complex, with DE 72 continuing west (north) on Wrangle Hill Road. Within the oil refinery, the road crosses Norfolk Southern's Reybold Industrial Track railroad line at-grade. DE 9 leaves the industrial area upon crossing marshy Red Lion Creek and continues into a mix of fields, woods, and marshland, with DE 9 Truck heading northwest on Hamburg Road. At this point, the route turns to the northeast and passes between Ommelanden Park to the west and the Ommelanden Hunter Training Center to the east before running between residential subdivisions to the west and the northern training grounds for the Delaware National Guard to the east. DE 9 passes through wooded areas with some homes before continuing into industrial areas and crossing a railroad spur. The road continues into marshland immediately to the northwest of the Delaware River, crossing Army Creek, before entering the city of New Castle.
At this point, DE 9 becomes West 7th Street and passes and industrial development. The route turns north-northwest onto Washington Street and crosses Norfolk Southern's New Castle Secondary railroad line at-grade, heading into residential areas. DE 9 comes to an intersection with the southern terminus of DE 141 and the eastern terminus of DE 273, at which point DE 9 Truck returns to the route by way of DE 273. Here, DE 9 turns east onto Delaware Street. The road carries one eastbound lane and two westbound lanes, with a multi-use trail parallel to the north. The route narrows back to two lanes and crosses the Jack A. Markell Trail, where the parallel multi-use trail ends, before it heads across the Norfolk Southern line again at-grade, at which point it turns east-northeast onto Ferry Cut Off Street near the New Castle Historic District. The historic district is home to the New Castle Court House Museum, New Castle Green, and the Sheriff's House, which are all part of First State National Historical Park. The road passes homes and businesses before intersecting East 6th Street.
Here, DE 9 turns northeast onto East 6th Street, crossing a marshy creek and widening into a four-lane divided highway. The route curves north and becomes Wilmington Road, passing through commercial areas. The road crosses the Norfolk Southern New Castle Secondary again at-grade and runs through suburban residential neighborhoods and businesses, leaving New Castle. DE 9 becomes New Castle Avenue and passes to the west of Veterans Memorial Park before it comes to a cloverleaf interchange with Interstate 295 (I-295)/US 40 a short distance to the west of the Delaware Memorial Bridge over the Delaware River. After the Rogers Road junction, DE 9 turns into a four-lane undivided road that continues through industrial and residential areas, crossing under I-495 without an interchange. The road briefly becomes a divided highway again and intersects the southern terminus of DE 9A, which heads east to provide access to I-495 and the Port of Wilmington.
After DE 9A, DE 9 enters the city of Wilmington and heads through urban areas as an undivided road, crossing Norfolk Southern's Shellpot Secondary at-grade before intersecting the northbound direction of US 13. At this point, DE 9 splits into a one-way pair with the northbound direction becoming concurrent with northbound US 13 on one-way New Castle Avenue and the southbound direction following southbound US 13 on South Heald Street, briefly turning east along with northbound US 13 on D Street at the south end of the one-way pair. The one-way pair, which carries two lanes in each direction, passes rowhouses and businesses, with New Castle Avenue merging onto South Heald Street. Here, US 13/DE 9 continue north-northeast on four-lane undivided South Heald Street, coming to an intersection with the northern terminus of DE 9A.
Following this, the road becomes East 4th Street and heads north-northwest across the Christina River on a drawbridge. US 13/DE 9 curves northwest and passes under Amtrak's Northeast Corridor railroad line, at which point northbound US 13 splits from the road by turning northeast on North Church Street at the grade crossing of a railroad spur. A block later, the concurrency between DE 9 and southbound US 13 ends at the point where southbound US 13 joins the road from North Spruce Street. DE 9 continues northwest through residential and commercial areas as a four-lane undivided road, entering downtown Wilmington. Here, it intersects US 13 Bus., which is routed on the one-way pair of North Walnut Street northbound and North King Street southbound. In between these two streets, the road runs to the south of the Leonard L. Williams Justice Center (the county courthouse for New Castle County).