 The freeway turns east again and enters Union Township , coming to an interchange with CR 614 and Route 173 . From here , I @-@ 78 / US 22 continue east directly to the south of Route 173 , coming to another interchange with that route as well as CR 625 . Entering more commercial areas , Route 173 merges onto I @-@ 78 / US 22 at exit 13 . At exit 15 , the highway meets an interchange with CR 513 , and Route 173 splits from I @-@ 78 / US 22 by heading north on CR 513 . At this point , the freeway runs along the border of Franklin Township to the south and Clinton to the north before entirely entering Clinton and crossing the South Branch Raritan River . I @-@ 78 / US 22 turns northeast and leaves Clinton for Clinton Township , where it has an eastbound exit and westbound entrance for Route 173 that also provides access to Route 31 . Immediately after is the interchange with Route 31 . At the next interchange near the community of Annandale , US 22 splits from I @-@ 78 , heading closely to the south of that route . 
