Historically, it is not clear which turnpike trust was responsible for the section of road from Birmingham to Lichfield, or even whether it "was" a turnpike. Also, the A5127 out of Sutton picks up the Roman road route a little north of Mere Green (having itself diverted via Metchley Fort, the modern suburbs of Perry Barr and Kingstanding, then Sutton Park and Four Oaks/Little Aston), and follows it to Lichfield. The point south of Lichfield where it interchanges with the A5 (once a staggered junction, altered to a simpler crossroads roundabout by the Wall Bypass, then complicated once more by the coming of the A38/A5148 and M6 Toll) marks the crossing of two Roman streets, with the old A5 continuing to the historic fort of Wall, a mile or so after branching off to the west.