▁route ▁of ▁the ▁B 1 4 3 6 ▁can ▁be ▁seen ▁clearly ▁on ▁F aden ’ s ▁large - scale ▁map ▁( at ▁one ▁in ch ▁to ▁the ▁mile ) ▁of ▁the ▁county ▁of ▁Nor folk ▁of ▁ 1 7 7 9 , ▁which ▁shows ▁that ▁the ▁most ▁part ▁of ▁this ▁road ’ s ▁route ▁has ▁changed ▁very ▁little ▁over ▁the ▁years , ▁even ▁after ▁the ▁Parliament ary ▁En closure ▁of ▁the ▁early ▁ 1 9 th ▁century . ▁The ▁main ▁difference ▁between ▁the ▁ancient ▁thorough fare ▁and ▁its ▁route ▁today ▁is ▁in ▁the ▁village ▁of ▁R ought on , ▁where ▁it ▁now ▁is ▁disse cted ▁by ▁a ▁st agger ed ▁two - min i - round about ▁j unction ▁where ▁the ▁road ▁cross es ▁the ▁A 1 4 0 ▁between ▁C rom er ▁and ▁Nor wich . ▁At ▁the ▁time ▁of ▁F aden ’ s ▁cart ography , ▁the ▁main ▁C rom er ▁to ▁Nor wich ▁road ▁was ▁part ▁of ▁the ▁B 1 4 3 6 ▁from ▁R ought on ▁Green ▁to ▁this ▁new ▁j unction ▁in ▁the ▁centre ▁of ▁the ▁village . ▁ ▁Us age ▁Tra v ellers ▁to ▁and ▁from ▁Nor wich ▁who ▁use ▁the ▁A 1 4 0 , ▁use ▁the ▁B 1 4 3 6 ▁between ▁Fel br igg ▁and ▁R ought on ▁to ▁avoid ▁the ▁bott l ene ck ▁one - way ▁system ▁that ▁is ▁in ▁the ▁town ▁of ▁C rom er ▁at ▁the ▁convergence ▁of ▁the ▁A 1 4 8 ▁from ▁Kings ▁Lyn n ▁and ▁the