This is one of the best birding spots in the Bay Area. The birds are very close, unafraid, and easily seen.
Radio Road is located at the northeastern end of Redwood Shores Parkway. From US 101, take exit 411, which has many names, including “Redwood Shores Parkway.” Whether exiting from US 101 north or south, follow the small sign that points you in the direction of the small San Carlos Airport; this will put you on Redwood Shores Parkway in the correct direction. Once you are on Redwood Shores Parkway, stay on it for a few miles. When you reach Shearwater Parkway (an optimistically named street!), continue on Redwood Shores Parkway, and look for the tall electrical towers just past a slough on your right. There is a sign there that says “SBSA 1400 Radio Road.” Turn right at this sign; you are now on Radio Road. You come to a stop sign; in front of you are the ponds of Radio Road; to your right is the Dog Park; to your left is the left spur of Radio Road; if you take a right, you can reach the main parking for Radio Road (and South Bayside System Authority). These directions make it sound quite complicated, but it is really quite simple – take Redwood Shores Parkway to Radio Road!
There are no restrooms at the site but you can find them at nearby Shorebird Park (turn left on Redwood Shores Parkway. from Radio Road, right on Shearwater Parkway which becomes Marine Parkway- Shorebird Park will be on the left before you reach the Oracle towers).