Historical clue formulations

• Very narrow, as a road — 2013-07-01
• Narrow, in a way — 2010-05-28
• Like some bridges — 2006-12-01
• Narrow, in a way — 2006-01-07
• Not suitable for passing — 2005-01-21
• Narrow, in a way — 2002-08-24
• Like most covered bridges — 1999-10-23
• Kind of road — 1997-03-13