Add polygon bridges to transportation (#437)

layers/building/mapping.yaml

@@ -60,6 +60,7 @@ tables:
       reject:
         building: ["no","none","No"]
         building:part: ["no","none","No"]
+        man_made: ["bridge"]
     type: polygon
 
   # etldoc: imposm3 -> osm_building_street
@@ -392,4 +393,5 @@ tables:
       reject:
         building: ["no","none","No"]
         building:part: ["no","none","No"]
+        man_made: ["bridge"]
     type: relation_member

layers/transportation/layer.sql

@@ -321,13 +321,21 @@ indoor INT) AS $$
             osm_id, geometry,
             highway, NULL AS railway, NULL AS aerialway, NULL AS shipway,
             public_transport, NULL AS service,
-            FALSE AS is_bridge, FALSE AS is_tunnel, FALSE AS is_ford,
+            CASE WHEN man_made IN ('bridge') THEN TRUE
+                ELSE FALSE
+            END AS is_bridge, FALSE AS is_tunnel, FALSE AS is_ford,
             FALSE AS is_ramp, FALSE::int AS is_oneway,
-            NULL::int AS layer, NULL::int AS level, NULL::boolean AS indoor,
+            CASE WHEN man_made IN ('bridge') THEN layer
+                ELSE NULL::int
+            END AS layer, NULL::int AS level, NULL::boolean AS indoor,
             z_order
         FROM osm_highway_polygon
         -- We do not want underground pedestrian areas for now
-        WHERE zoom_level >= 13 AND is_area AND COALESCE(layer, 0) >= 0
+        WHERE zoom_level >= 13
+            AND (
+                  man_made IN ('bridge')
+                  OR (is_area AND COALESCE(layer, 0) >= 0)
+            )
     ) AS zoom_levels
     WHERE geometry && bbox
     ORDER BY z_order ASC;

layers/transportation/mapping.yaml

@@ -308,6 +308,9 @@ tables:
       key: area
       type: bool
     - *public_transport
+    - name: man_made
+      key: man_made
+      type: string
     mapping:
       highway:
       - path
@@ -319,6 +322,8 @@ tables:
       - steps
       public_transport:
       - platform
+      man_made:
+      - bridge
 
 # TODO: Future table for joining networks
 # etldoc: imposm3 -> osm_route_member