diff --git a/data/json/construction.json b/data/json/construction.json
index eb0efc5dc9345..f8e8ab70f109f 100644
--- a/data/json/construction.json
+++ b/data/json/construction.json
@@ -882,6 +882,20 @@
     "components": [ [ [ "pebble", 100 ] ] ],
     "post_terrain": "t_railroad_rubble"
   },
+  {
+    "type": "construction",
+    "description": "Build grate bridge over air",
+    "category": "CONSTRUCT",
+    "required_skills": [ [ "fabrication", 5 ] ],
+    "time": "60 m",
+    "tools": [ [ [ "oxy_torch", 4 ], [ "welder", 20 ], [ "welder_crude", 30 ], [ "toolset", 30 ] ] ],
+	  "qualities": [ [ { "id": "SAW_M", "level": 1 }, { "id": "GLARE", "level": 2 } ] ],
+    "components": [ [ [ "pipe", 12, "sheet_metal", 1 ] ] ],
+    "pre_note": "Must be supported.",
+    "pre_special": "check_support",
+    "pre_terrain": "t_open_air",
+    "post_terrain": "t_grate"
+  },
   {
     "type": "construction",
     "description": "Build Straight Small Railroad Track",