Hutt Expressway
The Hutt Expressway is a 3-4 lane divided highway running from the Wellington Urban Motorway at Ngauranga, past Lower Hutt and central Upper Hutt, to the intersection with Fergusson Drive in Maoribank in north-eastern Upper Hutt. State Highway 2 officially continues north of Maoribank to Te Mārua, Kaitoke, and over the Rimutaka Hill to Wairarapa, but this section is two lanes undivided and is covered in the main State Highway 2 article. The names Hutt Expressway and Hutt Motorway are not official, and actually refers to three different roads: Hutt Road from the Ngauranga Interchange to the Petone Overbridge, Western Hutt Road from the Petone Overbridge to the Silverstream Bridge, and River Road from Silverstream Bridge to Maoribank.
Design
South of the Silverstream Bridge intersection the road is mainly two lanes each way, with a three-lane northbound section just south of the Belmont Hills intersection, and is dual carriageway throughout. North of the Silverstream Bridge intersection, the road is dual carriageway as far as Gibbons Street, except for a small section on the Moonshine Bridge across the Hutt River, with the Gibbons Street to Maoribank section being single carriageway. Except for the Moonshine Bridge and Totara Park to Maoribank section, the road has three lanes in total: two in one direction and one in the other, alternating every kilometreImprovements
The section between the Petone and Normandale Overbridges was improved by the Dowse to Petone project, replacing three sets of traffic lights with a grade-separated roundabout and an overbridge.The grade-separation of the SH 58 intersection at Haywards was opened in 2017, converting the traffic light controlled intersection with a grade separated roundabout interchange. There are proposals to replace the Melling intersection with a grade-separated interchange also. Future plans also exist to grade separate the intersections at Fairway Drive and at Silverstream.
Interchanges
All interchanges are at-grade unless otherwise specified. At-grade intersections are controlled by traffic lights, with minor ones controlled by Give Way and Stop signs. Several minor intersections were changed to prevent traffic turning right into or out of minor roads. The Haywards, Dowse Drive, Petone, and Ngauranga interchanges are grade-separated.| Territorial authority | Location | km | Destinations | Notes | - |
| Upper Hutt City | Maoribank | 949.7 | SH 2 Fergusson Drive – Te Mārua, Masterton Fergusson Drive – Mangaroa, Upper Hutt City Centre | River Road begins | - |
| Upper Hutt City | 950.9 | Totara Park Road Totara Park Road – Totara Park | - | ||
| Upper Hutt City | 952.3 | Gibbons Street – Upper Hutt City Centre | Traffic light controlled seagull intersection | - | |
| Upper Hutt City | 953.9 | Whakataki Street – Wallaceville, Whitemans Valley | - | ||
| Upper Hutt City | 954.7 | Moonshine Road – Trentham, Heretaunga | Southbound exit and entrance | - | |
| Upper Hutt City | 954.9 | Moonshine Bridge over Hutt River | - | ||
| Upper Hutt City | 955.5 | Moonshine Hill Road – Riverstone Terraces | - | ||
| Upper Hutt City | Silverstream | 959.1 | Fergusson Drive – Silverstream, Stokes Valley | Silverstream interchange – Traffic light controlled seagull intersection River Road ends; Western Hutt Road begins | - |
| Hutt City | Manor Park | 961.5 | Haywards interchange – grade-separated roundabout interchange | - | |
| Hutt City | 964.9 | Hebden Crescent/Liverton Road | - | ||
| Hutt City | 965.7 | Hebden Crescent/Gurney Road | Northbound exit and entrance | - | |
| Hutt City | Belmont | 966.4 | Carter Street – Belmont Domain | - | |
| Hutt City | Belmont | 966.9 | Fairway Drive – Avalon, Naenae, Hutt Hospital | Kennedy Good interchange – traffic light controlled staggered-T intersections | - |
| Hutt City | Belmont | 967.0 | Major Drive – Kelson | Kennedy Good interchange – traffic light controlled staggered-T intersections | - |
| Hutt City | 967.8 | Grounsell Crescent – Belmont Hills | - | ||
| Hutt City | 968.4 | Wairere Road/Pomare Road | Northbound exit and entrance | - | |
| Hutt City | Melling | 969.3 | Block Road – Normandale Tirohanga Road – Tirohanga | Melling Interchange – Twin traffic light-controlled four-way intersections; proposed interchange to start construction at end of 2022 | - |
| Hutt City | Melling | 969.4 | Melling Link – [Lower Hutt|Lower Lower Hutt|Hutt City Centre], Waterloo Harbour View Road – Harbour View | Melling Interchange – Twin traffic light-controlled four-way intersections; proposed interchange to start construction at end of 2022 | - |
| Hutt City | 971.7 | Dowse Drive – Maungaraki, Petone, Lower Hutt City Centre | Dowse Interchange – grade-separated roundabout interchange | - | |
| Hutt City | Korokoro | 973.2 | Southbound exit only | - | |
| Hutt City | Korokoro | 973.4 | Priests Avenue –, Korokoro | Northbound exit and entrance | - |
| Hutt City | Korokoro | 974.1 | Hutt Road –Petone, Eastbourne, Wainuiomata | Petone Interchange – Northbound exit and southbound entrance Western Hutt Road ends | |
| Hutt City | Wellington City | 974.7 | Horokiwi Road – Horokiwi | Northbound only. Southbound entrance closed in 2010. | |
| Wellington City | 976.1 | BP Hutt Road | Northbound only | - | |
| Ngauranga | Wellington City | 978.4 | SH 1 Hutt Road – Ngauranga, Porirua, Picton Ferry | Ngauranga Interchange – Southbound exit and northbound entrance. | - |
| Ngauranga | Wellington City | 979.0 | SH 1 Wellington Urban Motorway – Wellington City Centre, Airport | State Highway 2 ends | - |
;Notes