Union is accessible by a variety of roads.Hunterdon County Highway Map, New Jersey Department of Transportation. Accessed March 5, 2023. The most prominent roadway is Interstate 78 / U.S. 22, which run concurrently through Union Township.Interstate 78 Straight Line Diagram, New Jersey Department of Transportation, updated March 2016. Accessed March 5, 2023. Route 173 passes through the center and eventually merges briefly with both.Route 173 Straight Line Diagram, New Jersey Department of Transportation, updated May 2018. Accessed March 5, 2023. County Route 513 runs along the southeastern borderCounty Route 513 Straight Line Diagram, New Jersey Department of Transportation, updated November 2012. Accessed March 5, 2023. while County Route 579 goes along the southwestern border.County Route 579 Straight Line Diagram, New Jersey Department of Transportation, updated October 2012. Accessed March 5, 2023.
Union is accessible by a variety of roads.Hunterdon County Highway Map, New Jersey Department of Transportation. Accessed March 5, 2023. The most prominent roadway is Interstate 78 / U.S. 22, which run concurrently through Union Township.Interstate 78 Straight Line Diagram, New Jersey Department of Transportation, updated March 2016. Accessed March 5, 2023. Route 173 passes through the center and eventually merges briefly with both.Route 173 Straight Line Diagram, New Jersey Department of Transportation, updated May 2018. Accessed March 5, 2023. County Route 513 runs along the southeastern borderCounty Route 513 Straight Line Diagram, New Jersey Department of Transportation, updated November 2012. Accessed March 5, 2023 while County Route 579 goes along the southwestern border.County Route 579 Straight Line Diagram, New Jersey Depar.tment of Transportation, updated October 2012. Accessed March 5, 2023.