It looks like the latest MO 177 follows Lexington Avenue between Sprigg and Big Bend rather than taking Big Bend to its southern terminus and then follows (North) Sprigg all the way down to MO34/MO74.

P.S. I'm not so sure about naming the road ways for MO34/MO74 "State Highway 34" since there are two state routes that use those ways. Do we just pick the lowest? I'll look through the wiki for that, but it's probably best IMO to use Shawnee as the name since the ref tag captures the state route participation more effectively for both human and machine purposes