Additional structures and parts of the layout were also altered. In particular the runway was rearranged to a NE/SW (current designation alignment 04/22) and extended to . This caused the runway to project beyond the north east corner of the base and required the rerouting of Ermine Street (A15), the most noticeable artificial landscape feature in the area and the historic boundary for such elements as parish boundaries and field systems. Trees along the former tree-lined avenue to Hackthorn Park were also removed between the old line of Ermine Street and the end of the runway. The eastward bulge in the A15 road can still be seen north of Lincoln.