I think you'll find you can route up to and even beyond Heigham Road, but not *into* it. The reason is that Heigham Road is tagged one-way. Consequently, it will go a long way round: https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=51.53829%2C0.04205%3B51.53700%2C0.04539#map=16/51.5357/0.0446 But if you reverse the direction it will be possible; https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=51.53700%2C0.04539%3B51.53829%2C0.04205#map=18/51.53763/0.04370