I've hiked the stretch under construction from I-10 in Katy north to Hwy 290, and I can tell you for sure that it is more like 400 YARDS wide. It cuts a very wide swath through the countryside. The roadway itself is elevated with fill dirt to get above the prairie flooding, then you have shoulders on both sides, and then you have a wide drainage ditch beyond the shoulders, and finally another shoulder outside the drainage, before you get to the new pasture fencing. Or you can just drive the already-completed stretch from I-10 going south to Sugarland, and look at how wide that is. Highway 99 - Katy Prairie by John Rich These photos have been taken during my hikes along the new section of Highway 99 (Grand Parkway) which is under construction from Interstate-10 north to Highway 290. The general theme is the contrast between human construction and the natural beauty of the Katy Prairie. During this spring season, wildflowers were in profusion, and quite beautiful. Come see the prairie beauty, before it's gone... https://picasaweb.go...5JYK&feat=email