sentences:  East of the river, SR 20 heads north as Stony Point Road and the highway, now named Richmond Road, passes through the suburban community of Pantops before another diamond interchange with I-64.US 250 continues as a two-lane road through Shadwell, the birthplace of Thomas Jefferson, where the highway intersects SR 22 (Louisa Road) and crosses over CSX's Piedmont Subdivision.The highway passes through far northern Fluvanna County before entering Louisa County at the highway's intersection with US 15 (James Madison Highway) at Zion Crossroads.