Glossary of Terms
| Handrails | Protective rails on a bridge deck. |
| Head Wall | The wall at the end of a culvert which holds the soil fill above the culvert. |
| Headwalls | Parapets built on top or to the side of culverts. |
| Heaving | Displacement (lateral) of wearing course and base due to base failure. |
| Highway Maintenance | The preserving and keeping of roads, structures and facilities as near as possible to their original condition as constructed, or as subsequently improved and any additional work found to be necessary to keep traffic flowing freely. |
