Road surfacing standards
These standards set out the requirements for road surfacing on Northern Territory (NT) controlled roads and civil infrastructure.
Technical standards
- Bituminous surfacing works treatment and selection - Technical directive PDF (665.0 KB)
- Road pavement acceptance during construction - Guide note PDF (2.9 MB)
- Approval of aggregates for spray sealing purposes - Technical directive and approval register PDF (687.5 KB)
- Design of sprayed seals - Technical directive PDF (902.9 KB)
- Sealing under and around safety barriers - Technical directive PDF (532.2 KB)
Bituminous rise and fall
- Bituminous products - Rise and fall calculations – Industry update PDF (173.9 KB)
- Rise and fall calculation XLSX (39.7 KB)
Asphalt mix design register
Applications to register an asphalt mix must be submitted to the Department of Logistics and Infrastructure.
To apply, read the registration of asphalt mix designs - Technical directive PDF (879.3 KB)
Below are the approved asphalt mixes in the NT.
| Registration number | Asphalt supplier | Suppliers reference | Region | Mix type | Registration date | Registration expiry |
|---|---|---|---|---|---|---|
| NT-RAMD-2026-0032 | Fulton Hogan | C10 Type 2 medium | Darwin | Type 2 (A15E) | 1/11/2025 | 1/11/2027 |
| NT-RAMD - 2025-028 | Fulton Hogan | AC20 TYPE 4 – N246602 | Darwin | Type 4 (A15E) | 13/8/2024 | 16/08/2027 |
| NT-RAMD - 2024-024 | Fulton Hogan | PD2330-2 | Darwin | Type 5 | 23/8/2024 | 30/7/2026 |
| NT-RAMD-2026-031 | Downer | AC10 Light QLD25-289 - C320 | Darwin | Type 2 | 30/04/2026 | 30/04/2028 |
| NT-RAMD - 2023-019 | Downer | Type 2 - AC10 - Medium QLD22/0252 C320 | Darwin | Type 2 | 4/08/2023 | 4/08/2025 |
| NT-RAMD – 2025- 029 | Downer | QLD25-0274 | Darwin | Type 4 | 03/04/2025 | 03/04/2027 |
| NT-RAMD – 2025- 030 | Downer | QLD25-0273 | Darwin | Type 5 | 03/04/2025 | 03/04/2027 |
Contact
Project Manager Bitumen – Wayne Oliver
Wayne.oliver@nt.gov.au
08 8946 5047
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