State Route 228 is a primary state highway in the U.S. state of Virginia. The state highway runs 4.53 miles (7.29 km) from SR 657 at the southern town limit of Herndon north to SR 7 near Dranesville. SR 228 is the main north–south highway through Herndon, connecting the town directly with SR 7 and indirectly with SR 267 in northwestern Fairfax County.

State Route 606 in Fairfax and Loudoun Counties, Virginia is a secondary state highway traversing the communities of Reston, Herndon, Sterling, Arcola, and South Riding. The road is important not only because it is an inter-county connector, but it goes around the back of Dulles Airport, is part of the Loudoun County Parkway, and it provides a shortcut between the Reston / Herndon area and U.S. Route 50. Although the Herndon streets are not technically part of SR 606, they are signed as SR 606, and they connect to streets that are part of SR 606, thus providing a continuous route.