Extend primary road network from 1943 map
Extend primary road network from 1941 map
Extend primary road network and surrounding streets from 1939 map
Tag highway segment as elevated (bridge)
Connect bridges, based on 1939 map
Adjust highway geometry from 2014 aerial imagery (partially dismantled)
Add upper bound end date for bridge
Extend primary road network from 1939 map
Extend primary road network from 1944 map
Extend primary road network from 1944 map
Add primary roads from 1944 map
Add primary roads from 1944 map
Add primary roads from 1944 map