The dam also carried a railroad line and two lanes of US 62/641 at its crest. However, due to the planned lock expansion, two new crossings were built just downstream of the dam—a two-lane road bridge and a separate rail bridge. The new bridges were opened in late 2009. The road atop the dam is still in use for local traffic accessing the dam's powerhouse and visitor center, but is no longer a complete crossing, as the bridges that crossed the locks are now closed.