We will be travelling to Cherry Hill Park just north of DC. The plan is to come in from I-66 and take I-495 around to Cherry Hill. We will be arriving on a Friday. We can time our arrival so I'm th...
66 is dicey 24 hours a day but is doable at around a 30 MPH average (expect some stop and go) outside of rush hours. The problem is if there's an accident or other distraction you just never know. 495 should be ok that time of day.