For Dieter Jager, Browns Bridge at the Hall-Forsyth County line can’t be replaced soon enough. From his house on the Hall side, overlooking Lake Lanier, the noise of heavy trucks traveling over the bridge’s aging and — in some places — crumbling driving surface “is unbelievable, especially first thing in the mornings.” “But my concern isn’t so much the noise pollution as the safety issue,” said Jager, who has lived in the area north of Browns Bridge Road since 1968.