Placing concrete culvert
https://www.codot.gov/projects/archived-project-sites/co52-prospect-valley-resurfacing-and-culvert-improvements/photo-gallery/img_0687.jpg/view
https://www.codot.gov/projects/archived-project-sites/co52-prospect-valley-resurfacing-and-culvert-improvements/photo-gallery/img_0687.jpg/@@download/image/IMG_0687.JPG
Placing concrete culvert