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

Add highway

Extend highway

Extend highway

Add highway

Extend highway

Extend highway

Extend highway

Extend highway

Tag ref on highway segments

Extend highway