Originally Posted by
ETOPS
I've spotted a few over the years. Best example is the A74(M) north of Lockerbie - next to the Lockerbie lorry park at Hanginshaw.
From the farm bridge at the south end to the start of the gentle right curve at the north is 2200m or 7200 feet with no obstructions and an easily demountable central wire barrier...........
M8 west of Glasgow follows the line of the old Renfrew Airport main runway, although there is a block of flats at the western end. It's about 2000m on the straight bit.
There are one or two others, but generally they don't design straight bits of motorway as it stops drivers falling asleep!