terpster, you crack me up...
The wingspan limit is to keep the design within the parameters of a 737 NG.
Because the BDL procedure is restricted to Cat C aircraft, the designer also had to note that the approach was designed using narrow-body geometries. (2 X 68' = 136').
History of KBDL:
The FAA used the airport as a certification of the 3rd party developer Naverus. The FAA and Naverus designed procedures simultaneously for the FAA to determine if Naverus would have the same solution. The design parameters were set with a 737NG as the basis for the design, hence the wingspan limit on ClassC...
The FAA design came in with a lower DA because they waivered the canopy height on the hillside to the approach.
BTW..BDL was the foundation for the need to require the precipitous terrain algorithm...
Now that may get you a few beers...