This is about airports in Japan. Almost all boarding bridge of all airports here are for aircraft size of 737/MD87 and or above.
For boarding and deplane of CRJ SAAB340 DHC8-Q400, usually passenger use stairs buit in the aircraft. Only limited number of airports have lift car for wheelchair passengers. In many cases specially at smaller airports, we have no way but to ask wheelchair passengers to put their arms around airline ground staff and airline ground staff take their legs. Do you have better way of carrying wheel chair passengers at your airports?