Always thought pre-track warrant track line ups were iffy.
CEA

Am I reading this correctly???

I agree that this was an unusual Lineup - the DS would have to know by midday where the local would turn.  (Unusual is an understatement - I would call it useless as one could not get out on to the track or bridges and how could the local have operating authority?).  I would have been there that same day and likely had an earlier Lineup - the first one was usually issued around 6AM - Earl obviously got this one later when he was to start out onto the bridge.   But I operated under them successfully for years, with the exception of a time when the DS issued improper orders that the Lineup did not reflect (gave the wrong turn point for the local), and the train crew likewise misinterpreted the Rules for train orders, and the local hit us.   Not having a calendar from '72 handy, Earl's Lineup may have been on a holiday with closed stations and thus no OS reports - I had the same problem on those days - we sat at Sunbright for over two hours in the snow on a Thanksgiving Day waiting for the local and Dyer would not call for a location.   The lack of trains suggests such a time, and my Lineups in the same era on normal days had many more trains and more OS and OD times.  Lyle Dyer was a cantankerous DS, who would refuse to call for a location on the radio to protect the jobs.  Earl Collins was the B&B Foreman and was evidently working on the US23 Overpass at the 23T MP.  But having said that, I agree with Carl that they could be iffy.  The usual practice was that if they had to run a train not on the Lineup and they could not contact anyone named on the Lineup, they had to issue an order to that train to "Run carefully looking out for equipment or track crews on the track. " I personally can attest that the St. Charles local did not "run carefully" one day when, just after I got off the track at St. Charles I saw a second local running around those sharp curves at Timetable Speed.  

Jason, you are basically correct - I could and would not have gone out on track under this Lineup without flag protection.  Collins would have to put a flag out in both directions if he had not put out a Conditional (Y) Stop Board ahead of time. Any work that I or my crews were to do would have to be protected the same way.