Adding Plum Creek from NHD import

Adding South Platte River through Chatfield Lake

Removing extra Castle Rock

Adding I-25 through Denver

Adding I-25 through Denver

Adding Valley Highway (I-25)

Adding Valley Highway (I-25)

Adding Valley Highway (I-25)

Adding I-25 Denver

Adding I-25

Adding Valley Highway

Adding Valley Highway

Adding Valley Highway

Fixing Mousetrap dates

Fixing Mousetrap dates

Removing duplicate I-70 superroutes

Removing duplicate I-70 superroutes

Removing duplicate I-70 superroutes

Adding I-70 route and chronology relations

Adding I-70 route and chronology relations