OpenHistoricalMap/Projects/Portland
This project aims to map the Portland, Oregon area.
Stages
Stage 1: Main Roads
The first focus point is to add major roads to the Portland Metro area. These major roads will be helpful in showing a low-level map of the roads that move Portland. The project is currently at this stage.
Stage 2: Other roads in Portland
Next, the focus will be to map other roads (e.g. residential areas) within the city of Portland proper.
Stage 3: Other roads in Inner Metro
Afterwards, the focus will shift to mapping other roads in the "inner metro". This is limited to Gresham, Fairview, Clackamas, Tigard, Lake Oswego, Beaverton, Hillsboro, and all of the unincorporated communities around Bethany (e.g. Oak Hills, etc.).
Stage 4: Other roads in Metro
Later, we will map all of the roads in the Portland Metro boundary.
Stage 5: Adding other details
Once roads are mapped, you are free to add details such as houses, schools, etc.
Road tagging
Hierarchy
Please use the following hierarchy for roads.
- Motorway = interstate highway and other roads to freeway standards (e.g. Sunset Freeway, OR 217 freeway).
- Trunk = a major highway not to freeway standards (e.g. Sunset Highway pre-freeway)
- Primary = major arterials
- Secondary = smaller main roads
- Tertiary = much smaller capacity linking roads
- Residential = only for roads that are solely in neighborhoods
- Minor/Unclassified = only for small roads in farm country that does not meet one of the criteria above. If a main road continues into farm country and is primary/secondary/etc, do not split the section and retag as minor.
- Service Road = roads to link to buildings that aren't residential, e.g. a parking road
Using relations
Please do not use name:[year]-[year] tags (like name:1951-1973). These do not show up on the renderer. Instead, tag the road with multilinestring relations (example). You should also create separate relations if the road changed alignments in a certain year, or if the road is old enough to be before the addition of NW/NE/SW/SE/N/S at the beginning of the street name (in the Portland metro, it appears to be around 1951 (EDTF: 1951~). For Portland proper, it appears to be from 1931-1933, so tagging as circa 1932 should be OK (EDTF: 1932~). Help with finding the exact dates would be appreciated.
However, if the road name/alignment didn't ever change, you can tag it like a normal road on OSM (example).