Infrastructure Management To properly take care of the timber, we need access to the land. Here is an installation of a 48″ diameter culvert across a non-fish stream. The entire project took 10-hours from start to finish. 48-in Culvert Installation Culvert Staging Area Digging out the Trench for the Culvert Preliminary Work for 48-in diameter Culvert Install Banding and tightening of the Culverts to Secure In Place Banding and tightening of culvert sections 48-in diameter Culvert Placement Putting dirt around culvert to secure it in place. Checking the inside of he culvert banded sections Water Flowing Through Culvert Finished Culvert Installation 2/3rds of the ATF Crew Setting a 48" diameter culvert into the trench Covering the culvert with fill dirt Success! Water flowing through the culvert. The water is initially brown since there is a lot of disturbed dirt. After a few minutes, the water turns clear.