In 1932, the portion of US 13 between Felton and Dover was widened. In addition, the divided highway between Reynolds' Corner and Drawyers Creek was completed in September and work began on widening US 13 into a divided highway between Smyrna and Reynolds' Corner. The completion of the divided highway between State Road and Wilmington was slated for summer 1933. This widening project included widening the bridge over the Pennsylvania Railroad in Farnhurst. In 1933, the divided highway portion of US 13 was extended south to Smyrna while the portion between Dover and Smyrna was under contract. The same year, the remainder of US 13 south of Dover was widened. The divided highway portion between Dover and Smyrna was finished on September 22, 1934, marking the completion of widening US 13 between Dover and Wilmington into a divided highway. At the time, US 13 between Dover and Wilmington was the best superhighway and the longest stretch of divided highway in the world.