PINSON, Ala. -- At 8 a.m. on a Saturday, the rumble of bulldozers and other earth-moving equipment was already audible in Ardell Turner's modest home in this rural hamlet north of Birmingham. Not far away, they once mined coal. Now state and local leaders are seeking prosperity through one of the nation's largest and priciest road projects. On planners' maps, the Northern Beltline will be a 52-mile, six-lane interstate that will effectively complete a loop around Birmingham, Alabama's largest city. More than a half-century after the Beltline's conception, work on a small segment began last year within a mile of...