3.8.1. Road structures. Rules for drawing and adding attributes.

The “Road structures” category includes:

  • Bridges, including pedestrian.
  • Solid piers with water underneath (drawn as bridges).
  • Underground and above-ground pedestrian crossings, tunnels, and squares (including with proper names).
  • Squares within localities that are intended for public events, are paved, and have a defined territory. Rules for drawing road structures

When drawing road structures:
Draw road infrastructure items consistently, using polygons to represent structures.
When mapping road structures:
  • Set the bridge borders (that run perpendicular to the traffic lanes) based on the expansion joint (see also Don't include the embankment in the polygon that represents the structure.

  • Draw the borders of tunnels at the point where the roadbed descends underground. Do not round the edges of the tunnel that lead into the portal; draw them straight:

    Correct Incorrect

You can map non-capital structures on piers as well as stationary watercraft that work as piers.

Road structures intended to provide a passage over small waterways and consisting of pipes and embankment “should not” be categorized as “Bridges” or Tunnels.

The shape of polygons should match that of the actual structure; diagrams are not allowed.
Items in the “Road construction” category are drawn and edited using the techniques described in Section 2.7.3. Simple polygonal items. Drawing bridges and aboveground pedestrian crosswalks

When drawing bridges and above-ground pedestrian crossings, pay attention to the possible displacement in the satellite image of the bridge surface or passage crossing from its position on the map that can be attributed to its elevation above the surface (see Section Bridges).

The extent of this displacement (green arrows in drawing) may be significant enough to affect the position of the bridge road within the broader road network:

When drawing bridge polygons, try to align their borders with the road sections that go over the bridge. The bridge borders that run perpendicular to the traffic lanes should be placed at the beginning and ending points of the road section that runs over the bridge.

When drawing bridge polygons, the borders should align with the expansion joint where the bridge road connects to other road sections (if these are visible on a panorama or satellite image):

If you can't see the expansion joint, then draw the polygon based on the points where the bridge road rises from the ground (even if that will result in non-right angles):
When drawing internal polygons, follow 2.7.2. Rules for using internal polygons.

When drawing polygons of underground and aboveground pedestrian crosswalks, include all parts of the crosswalk: the descent or ascent and the underground or aboveground parts:

You should not exclude any sections of the crosswalk from the polygons because that would split it:

Correct Incorrect
When drawing polygons of underground and aboveground pedestrian crosswalks, keep in mind that they should match up with the road sections that are marked as Pedestrian Crosswalks and with the Pedestrian and bike paths class on the map. Such polygons should also have Level A and B values that correspond with the item type (“+1” for aboveground and “-1” for underground crosswalks).

Draw square borders defined by building facades. If there are no facades, then base your drawing on the outer edges of the roadways that border the square:

Include vegetation items in the square's polygon if they belong to the park that is located entirely within this square.

If there is a named “square”, and nothing remains of that road structure but there are addresses linked to that square that are located along a named road of class 7 or higher, than enter the square name for that road (as a “street in locality” type) and don't duplicate it as a road structure.

For example, Freedom Square in Astrakhan: Rules for adding attributes to road structures

The attribute panel for a road structure looks like this:

Rules for adding attributes to road structures: Type

Select the item type from the list:

  • Bridge
  • Tunnel
  • Square (lot)
  • Aboveground pedestrian crosswalk
  • Underground pedestrian crosswalk
  • Pedestrian bridge Name
Road structures are named in accordance with the general rules. See 3.1.3. Map item naming rules..
Rules for naming road constructions are similar to rules for naming roads, see section Rules for naming roads.
If a bridge or tunnel has a proper name, then enter it for the “road structure” as well as for the section of road that passes over it (see also point
Road structures may be unnamed.