In Career mode, go to the Tri-City world map and pan to Sunset Hills (Upper City). On the right hemisphere of that map fraction, there should be a road that turns left then suddenly ends. In case of a sudden pursuit, rush to that point immediately. There should be an open bridge. Ramp over it. The other police cannot go over. For easier navigation, direct the GPS to a Pursuit Breaker closest to that point. Note: You will have to go well over 160 km/h to cross the bridge.