Apologies for the delayed reply and thank you for your report. The gap between this 2 lane Arctic Street and the 1 lane connection is not a bug, but this is caused due to the grassy border surrounding the 2 lane Arctic Future road. Every 2 lane roads from other eras, except for the Arctic street and the Solar Roadway, have a sidewalk as border which makes a smoother connection to a 1 lane road.