No. To get to that area, Mickey would have ridden all the way down St. Landry, and either headed directly to the bike trail behind Blackham Coliseum, or if she followed the route that the hospital security guard had noted on previous nights, she would have turned left onto St. Julien, taken Johnston to the Coliseum and either taken a spooky dark road alongside the Coliseum (one of the fields I saw being searched was down that road) OR she'd have passed the Coliseum and turned onto Cajun Dome Blvd (bigger, more lit road)
As you travel to the Coliseum, you come across Reinhardt-----this is Souviner Gate with a different name. IF you turned RIGHT on Reinhardt, you'd come to a little side street called Fraternity Row....the areas being searched were in a grassy field on the Fraternity Row side of Reinhardt, right before Fraternity Row.
Now, if Mickey had taken St Julien to Johnston to Cajun Dome Blvd, she would NOT have turned right on Reinhardt.....she would have turned left, crossed Bertrand and gotten onto Congress. HOWEVER, if Mickey took the dark spooky road behind the Coliseum, she would have passed that field by Fraternity Row.
SO, kgeaux thinks LE was going on the theory that Mickey took St. Landry and went directly toward the rear of the Coliseum, that they believed she did not turn onto St Julien.
They were probably searching every possible route she could possibly have taken, and these are just the ones I happened to see.