I could get my Bachmann K-27 through even with a slight curve on the approach. The Accucraft K-28 needed the awnings over the cab windows folded in and a straight approach though. No problem with the body clearances and stove pipes on the Accy' J&S combine and Bachmann long caboose. In the end though I replaced with an MVL under beam bridge. Lot more room and made to measure. Max