Landscape Architecture Program


Nimitz median stripLandscape architecture is a diverse profession that encompasses the analysis, planning, design, management, and stewardship of the natural and built environment.

At Hawaii DOT, landscape architects strive to provide design solutions that enhance the quality of life, emphasize safety, preserve & protect environmental resources, sustainable & durable, aesthetic & scenic qualities, economic development, roadside vegetation management and integration of community values & regional context to ensure transportation facilities fit within the land and our communities.

Snipp Cover

1. HDOT Statewide Noxious Invasive Pest Program

The HDOT Statewide Noxious Invasive Pest Program establishes a ten year strategic plan to mitigate the introduction, spread and impact of invasive species within the state highways right-of-way.

                            a.  10 Year SNIPP Strategic Plan (pdf 815 KB)

                            b. SNIPP Year 1 Annual Report (pdf 264 KB)

cover2. Ecological Zones and Native Planting List (pdf 11.3 MB)

The purpose of the Ecological Zones and Native Planting List is to guide HDOT landscape architects, engineers, and contractors in selecting appropriate native Hawaiian plant species for Highway right-of-way projects.

HDOT Landscape Manual Cover

3. HDOT Highway Manual for Sustainable Landscape Maintenance

The State Highway Manual for Sustainable Landscape Maintenance establishes statewide standards and provides step-by-step directions for roadside maintenance staff and contractors.

     i.  Cover (pdf 600 KB)

                              ii.  Table of Contents (pdf 600 KB)

                              iii.   Chapter 1 – Introduction (pdf 1.2 MB) 

Introduction Chapters 1-3

          iv.   Chapter 2 – Planning & Strategies (pdf 1.4 MB)

           v.   Chapter 3 – Landscape Maintenance Zone (pdf 2.8  MB)

          vi.   Chapter 4 – Safety (pdf 2.3 MB)Safety RulesSafety Traffic Control

         vii.   Chapter 5 – Mowing & Edging (pdf 2.8 MB)Mowing

        viii.   Chapter 6 – Pruning (PDF 10.4 MB)Pruning

         ix.   Chapter 7 – Rubbish and Debris (pdf 900 KB)Rubbish and Debris

          x.   Chapter 8 – Replacing Plants (pdf 2.7 MB)Rubbish and Debris

         xi.   Chapter 9 – Invasive Species Management (pdf 1.1 MB)Rubbish and Debris

        xii.   Chapter 10 – Use of Pesticides (pdf 3.5 MB)Rubbish and Debris

        xiii.   Chapter 11 – Fertilizers (pdf 4.4 MB)Rubbish and Debris

        xiv.   Chapter 12 – Irrigation System (Part 1) (pdf 21 MB)

Chapter 12 – Irrigation System (Part 2)

Chapter 12 – Irrigation System (Part 3) Rubbish and Debris

         xv.   Chapter 13 – Contractor  Qualifications (pdf 570 KB)Rubbish and Debris

        xvi.   Chapter 14 – Reporting (pdf 700 KB)Rubbish and Debris

       xvii.   Chapter 15 – Inspecting Vegetation Maintenance Work (pdf 600 KB)Rubbish and Debris

      xviii.   Appendixes (pdf 1.8 MB)

Purchase Information

Contractors may purchase the State Highway Manual for Sustainable Landscape Maintenance from Ms. Emily Hsu of our Staff Services Office at (808) 587-4069. The cost is $41.00 per book if you request that it be mailed to you within Hawaii, $47.00 per book if mailed to the mainland, or $35.00 per book if picked up at 869 Punchbowl Street, Honolulu, Hawaii.

Mail requests to Ms. Emily Hsu, Hawaii Department of Transportation,
869 Punchbowl Street, Honolulu, Hawaii 96813-5097.

Contact Information

Michele Nagafuchi
State of Hawaii Department of Transportation
Highways Division, Design Branch, Landscape Section
Tel: (808) 692-8363
Fax: (808) 692-7590