Complex sentence: The long-term projection is for Route 20 to run as far north as Hadera, however, this has garnered very strong opposition from environmental groups since the road would have to cross a nature preserve and other sensitive environmental areas.
Split into simpler sentences: The long-term projection is for Route 20 to run as far north as Hadera. However, this has garnered very strong opposition from environmental groups, since the road would have to cross a nature preserve and other sensitive environmental areas.