Complex sentence: From Royston, it was formerly represented by the A14 to the A1 but now it is the A1198 to Godmanchester ("Durovigutum") and ignoring bypasses and modern diversions, the road through Huntingdon to the Alconbury junction on the A1 gives the line.
Split into simpler sentences: From Royston, it was formerly the A14 to the A1 but now it is the A1198 to Godmanchester ("Durovigutum"). Ignoring bypasses and modern diversions, the road through Huntingdon to the Alconbury junction on the A1 gives the line.