How many kilometers long is the highway immediately north of Swanport?
Swanport, South Australia: Swanport, also formerly known as Thompson's Crossing and Thomson's Landing, is a suburban satellite locality of Murray Bridge in South Australia on the west (right) bank of the Murray River adjacent to Swanport Bridge. Swanport, South Australia:  Its boundaries were formalised in March 2000 to cover a portion of semi-urban land immediately south of the South Eastern Freeway adjacent to the Swanport Bridge, which is the main road freight route over the Murray.
i don't know