The mainline route follows the older , narrower William B. Umstead Bridge .
The mainline route goes through the community of Manteo before rejoining the bypass route to access a series of bridges and causeways that connect Roanoke Island to Bodie Island on the Outer Banks .
The mainline route follows the older , narrower William B. Umstead Bridge and goes through the community of Manteo before rejoining the bypass route to access a series of bridges and causeways that connect Roanoke Island to Bodie Island on the Outer Banks .