It begins in Stumptown, where it leaves US 13 at an intersection to the west, passes through Eastville, and recombines with US 13 north of town in Kendall Grove.

is a business route of US 13 serving Onley, Tasley, and Accomac in the state of Virginia, weaving across the parent US 13 several times.

It begins in Onley in the south with an intersection with US 13, leaving the mainline route to the east and following Coastal Avenue.

Front Street eventually expands into a four-lane boulevard just before it rejoins mainline US 13, the southbound lanes intersecting with the north bound merging into it as a ramp.

The route begins south of Pocomoke City; US 13's four-lane divided mainline curves away to the right around the town, while US 13 Bus.

The route soon reaches the Pocomoke River, crossing it on a drawbridge that was first constructed in the 1920s, reconstructed in the 1990s, and continues in active service today.

The route was originally created as a segment of MD 675 by 1975, when the four-lane divided Ocean Highway opened around the eastern and northern edges of the town for US 13, allowing through traffic to avoid congested inner-city streets.

began at US 13 south of Delmar in Wicomico County, Maryland, heading northwest into the town on two-lane undivided Bi State Boulevard.

The road turned north and came to an intersection with MD 455, at which point it crossed the state line and entered Delmar in Sussex County, Delaware.

The route continued north before it left Delmar and headed through rural areas, with a Pennsylvania Railroad line a short distance to the west and US 13 to the east.

left Seaford and became Bridgeville Highway, heading northeast through rural areas to its northern terminus at an intersection with US 13 at Hearne's Mill.

was designated in 1954 following the completion of a new divided highway alignment of US 13 between south of Delmar, Maryland, and north of Seaford, Delaware.

The business route has a junction with Redden Road before it reaches its northern terminus at an intersection with US 13/DE 404 only accessible to and from the southbound lanes of US 13.

has an annual average daily traffic count ranging from a high of 6,171 vehicles at the north end of the DE 404 Bus.

Work on the project was completed on May 21, 2009, with the Delaware Department of Transportation (DelDOT) secretary Carolann Wicks and President of Commissioners for the Town of Bridgeville William Jefferson in attendance at a ceremony.

leaves Woodside and runs north through a mix of farmfields and woods with some homes, crossing Tidbury Creek to the east of Derby Pond.

The route curves northeast and passes a mix of agricultural areas and residential subdivisions before it enters Camden.

is a 3.86-mile (6.21 km)[14] alternate route of US 13 that passes through the downtown area of the city of Dover in Kent County, Delaware.

From here, the alternate route heads north on South Governors Avenue, a three-lane road with a center left-turn lane.

The route curves northeast past more commercial establishments prior to bending north and crossing Puncheon Run, passing through residential areas with a few businesses.

becomes North Governors Avenue and passes to the west of the Delaware State University Downtown campus before it continues through residential areas.

Past downtown, the business route heads through the northeastern part of the city on North Market Street before continuing through suburban Brandywine Hundred on Philadelphia Pike.

came to an intersection with the northern terminus of DE 9 before it reached Christiana Avenue, where it turned northwest and crossed over the Christina River on a drawbridge.

turned northeast and ran parallel to a Penn Central Transportation Company railroad line and the Delaware River, both to the east of the route.

begins at an intersection with US 13 and the western terminus of PA 291 in the borough of Trainer, heading northeast along two-lane undivided Post Road.

The route comes to a partial interchange with the US 322 freeway providing access to and from the Commodore Barry Bridge over the Delaware River.

[51][52] In November 2020, the American Association of State Highway and Transportation Officials approved the realignment of US 13 through Chester along PA 291 and Morton Avenue and the establishment of US 13 Bus.

The route crossed PA 420 north of Prospect Park before it reached its northern terminus at an intersection with US 13 in Collingdale.

The two routes continued northeast and became City Avenue, forming the border between Montgomery County to the northwest and Philadelphia to the southeast.

[56] The northern terminus was further scaled back to Hunting Park Avenue and East River Drive by 1960, with more of mainline US 13 replacing the bypass designation.