Extend railroad tracks from 1891 map
Extend railroad tracks from 1894 map
Add start date for railroad tracks
Update start date for railroad tracks
Sort out railroad bridges entering across Sacramento River
Extend railroad tracks from 1907 maps
Extend railroad tracks from 1908 map
Add settlements from 1945 maps
Update start date for railroad tracks
Extend railroad tracks from 1945 maps
Add railroad tracks from 1902 map
Mark freeway bridge spans as bridge=yes
Fix missing end date on highway ramp