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| Hammond District - Contact: (985) 375-0100 or 1-800-545-9280 A six parish region around Hammond consisting of Livingston, St. Helena, St. John, St... | 62 |
| Heater Scarification - The initial phase of a hot in-place recycling (HIR) process in which the surface of the old pavement is heated and mechanically ... | |
| Highway Lighting Design and Lighting Projects - Contact: Bridge Design Section - Electrical Gang - (225) 379-1302 | |
| Highway Miles - DOTD is responsible for more than 16,683 miles of roadway and 894 miles of interstate. | |
| Highway Safety Commission - Mission Statement 225-925-6991 "The Louisiana Highway Safety Commission is committed to developing and implementing a compreh... ... website | |
| Highway Safety Hardware Design - Information on design and details for highway guard rail and bridge rail, ground mounted and overhead signing structures and oth... | 24 |
| Highway Safety Section - Contact: (225) 379-1871 Crash Data and Analysis Fatal Analysis Reporting System (FARS) Bicycle / Pedestrian Progr... ... website | 82 |
| History of DOTD - What is the history of DOTD? The Louisiana Legislature established the Board of State Engineers in 1898 to create a uniform pu... | |
| Hot Air Lance - A device that uses heated compressed air to clean, dry, and warm cracks prior to sealing. | |
| Hot Applied Sealant - A crack or joint sealing compound that is applied in a molten state and cures primarily by cooling to ambient (surrounding) temp... | |
| Hot In-place Recycling - A process which consists of softening the existing asphalt surface with heat, mechanically removing the surface material, mixing... | HIR |
| Hot Mix Asphalt Concrete - A thoroughly controlled mixture of asphalt binder and well-graded, high quality aggregate thoroughly compacted into a uniform de... | HMAC |
| Hudson Initiative Program - Full implementation of the procedures governing the Louisiana Initiative for Small Entrepreneurships, known as the Hudson Initia... | |
| Human Resources - Contact: (225) 379-1259 ... website | HR, 16 |
| Hurricane Flood Protection - Contact: (225) 379-3000 ... website | 64 |
| Hydraulics - Contact:225-379-1482 | 32 |
| Hydroplaning - Loss of contact between vehicle tires and roadway surface that occurs when vehicles travel at high speeds on pavement surfaces w... | |