RIVIERA BEACH, Fla. — The rechristened road runs beside a railroad freight line, slicing across a modest corner of Palm Beach County and a considerable section of the Southern psyche. It used to be called Old Dixie Highway.

But now this two-mile stretch, coursing through the mostly black community of Riviera Beach, goes by a new name. Now, when visitors want to eat takeout from Rodney’s Crabs, or worship at the Miracle Revival Deliverance Church, they turn onto President Barack Obama Highway.

Our national journey along this highway is nearing its end, these eight years a blur and a crawl. That historic inauguration of hope. Those siren calls for change. The grand ambitions tempered or blocked by recession and time, an inflexible Congress and a man’s aloofness.

War, economic recovery, Obamacare, Osama bin Laden. The mass shootings, in a nightclub, in a church — in an elementary school. The realization of so much still to overcome, given all the Fergusons; given all those who shamelessly questioned whether our first black president was even American by birth.