In article ,
"Javier Omella" wrote:

Here is LEX Airport diagram (http://avn.faa.gov/d-tpp/0608/00697AD.PDF) and
the runways aren't that close, so it's weird they took the wrong one.

Quite the contrary, the approach ends of the two runways are very close
and served by the same taxiway.
Port Columbus International Airport/KCMH had a similar arrangement at
the junction of the approach ends of R28L/R23. Some airlines actually
used the first several hundred feet of R23 to taxi onto R28 instead of
taxiing all the way to the R28 thrreshhold via the taxiway.
Approximately 10-years ago, the airport dug up the concrete and
completely reconfigured the layout to avoid confusion.
There are other airport with similar arrangements. Look for the FAA to
implement a construction program to correct these situations as a result
of todays crash.
And there had been confusion, but no consequences as happened today in
LEX.