Plymouth Haven is near the terminus of Fort Hunt Road at the Potomac River.
Plymouth Road starts and ends on Fort Hunt Road. This is because it cuts the corner where Fort Hunt Road turns from Vernon View toward the GW Parkway at Fort Hunt Park. Plymouth Road defines the Fairfax County neighborhood of Plymouth Haven. Although many Plymouth Haven homes sport extensive refurbishments and renovations, the original homes of Plymouth Haven are generally modest upper-middle-class homes from the middle of the last century. The desirability of the Plymouth Haven neighborhood and the large lots found there have encouraged builders to knock-down many homes and to build large luxury homes.