From Roader's Digest: The SABRE Wiki
|Length:||12.7 miles (20.4 km)|
|Meets:||A723, B7029, A73, B7057, B717, B718, A706|
The B7066 was the A8 between Carfin, North Lanarkshire and Whitburn, West Lothian before the M8 was built. There is a section up from Carfin before the old A8 is joined. Carfin Rail Station on the Edinburgh to Glasgow line is passed on this section.