The a74 route was upgraded to a dual carrigeway in the 1960s. Then in the 1970s there were fatal crashes on the route due to the fact that it was sandwiched between 2 motorways the m6 and m74. Then the uk government had a plan to upgrade the road to motorway status to the scotland england border. As a result the a74 has been downgradef to a b road. The old a74 route was badly designed in the first place it will always be classed as a killer road due to bad workmanship.
The a74 route was upgraded to a dual carrigeway in the 1960s. Then in the 1970s there were fatal crashes on the route due to the fact that it was sandwiched between 2 motorways the m6 and m74. Then the uk government had a plan to upgrade the road to motorway status to the scotland england border. As a result the a74 has been downgradef to a b road. The old a74 route was badly designed in the first place it will always be classed as a killer road due to bad workmanship.