accessway

plural accessways

1. A route providing access.

   […] the typical flat commercial roof has numerous skylights, ventilation openings, trap doors, and other maintenance accessways that are more convenient points of penetration.

   1994, Ed San Luis, Office and Office Building Security, page 30

   1 more example

   Elements that create aisles or aisle accessways may be movable by the users. However, when designing a space, the furniture layout must provide the required egress and accessible path.

   2011, Sharon Koomen Harmon, Katherine E. Kennon, The Codes Guidebook for Interiors, page 150