 The new (current) alignment of Highway 40 was built with a wide-enough right of way for future twinning to an expressway and upgrading to become a freeway, if the need ever arises.There are no private properties on Highway 40's new alignment, and the only access is at intersecting roads, or at traffic signal-governed intersections, with sufficient right-of-way for overpasses and interchanges if upgrading takes place.The entire Sarnia Bypass (along the south and east ends of Sarnia) is also built to this standard for relatively easy upgrading.