David,
This is a common problem. My home course is a Colt design, with some alterations by Braid (and a new hole courtesy of a loose cannon greens committee). Fairway widths are very narrow, less than 20 yards in places. What old photographs the club has (and there aren't many) show far, far wider fairways. We now have bunkers sitting in rough and, worse, an island pf rough and saplings between the 1st and 18th which appear, originally, to have shared a wide fairway.