Location: Baltimore Ave and East-West Hwy, Riverdale Park Just after the 1 Alt junction, we’ll enter Riverdale Park and approach MD 410. Location: Baltimore Ave and East-West Hwy, Riverdale Park Turn right for 410 east and left for 410 west.  N to MD-430, S to MD-208  E to MD-201, W to MD-500  S to MD-208