642.5 Maximum Extent Feasible
As stated in the 2010 ADA Standards for Accessible Design, the phrase "to the maximum extent feasible" applies to the occasional case where the nature of an existing facility makes it virtually impossible to comply fully with applicable accessibility standards through a planned alteration. In these circumstances, the alteration will provide the maximum physical accessibility feasible.
It may not be feasible to provide access to all types of disabilities. However, if access could be provided to other types of disabilities, that is an allowable solution as well. For example: if providing accessibility to individuals with certain disabilities (wheelchair users) is not feasible, but providing access to persons with other types of disabilities (crutches, hearing or vision) is possible.