Hope this is the right area. On I-66 / Dulles exit 18, the left fork to go to I-495 North has the sign to Baltimore, and the right fork to go to I-495 South has the sign to Richmond. The directions in OpenStreetMap when going left correctly tell the user to take the left fork, but say "Richmond" incorrectly.

https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=38.8817%2C-77.2332%3B38.8911%2C-77.2171

https://i.imgur.com/eEbKIrL.jpg