The roadway before improvements including the narrow culvert.

A closeup of the concrete box culvert.

The contractor has excavated the ends of the concrete box culvert before extending the culvert.

The box culvert extensions are underway. The concrete for the floor and walls have been poured.

The top slab has been poured and all the forms removed. Lastly, the shoulders will be widened to match the wider culvert.

The contractor has hauled in extra dirt then graded and seeded the new shoulders and ditches. The project is complete.