There are several steps that go into box culvert installation. First, the site needs to be prepared by a contractor who understands the importance of bedding the structure correctly according to the ground conditions. The bed needs to support the extremely heavy load of the box culvert itself, its contents, and anything that will be on top of it. This requires removing any unstable materials like rocks, excavating to the proper depth, leveling the subgrade, making sure it is compacted, and more. Surface and subsurface water must be controlled during excavation and construction. Joints must be sealed properly depending on a variety of different factors, and finally, the area needs to be backfilled carefully and with the correct materials. If any of these steps are performed incorrectly, the box culvert will not be efficient and durable over time.