Map | Hexham Straight | Transport for NSW

Select a category

Select a category below to change the project information you see on the map:

Noise

Map layers

Operational Noise levels

Predicted noise change with proposal

Predicted total noise with proposal

Operational noise

Nearby residences and buildings have been identified as eligible for consideration for additional noise mitigation. Prior to construction, these properties will be further assessed to determine feasible and reasonable treatments to mitigate any operational noise impacts.

Construction noise

Construction would result in temporary noise impacts at nearby residential and business locations

Construction activities would be undertaken during standard working hours where possible:

Monday to Friday	7:00 a.m. to 6:00 p.m.
Saturday	8:00 a.m. to 1:00 p.m.
Sundays and public holidays	No work

Some activities would be undertaken outside of standard construction hours to minimise traffic impacts and for safety reasons.

Construction activities would result in a short-term increase in localised vibration levels. At times, these vibration levels may be felt at sensitive receivers close to the proposal.

Construction noise and vibration impacts would be managed through the implementation of mitigation measures including the preparation of a Construction Noise and Vibration Management Plan to identify specific measures to be adopted, a monitoring program, an out of hours works procedure and community consultation requirements.

Download Chapter 6.9 Noise & Vibration

Next – Flooding & Hydrology

Back to categories

Flooding & Hydrology

The proposal would result in minor changes to the peak flood level locally.

Map layers

Existing peak level
(1 in 20 year event)

Existing peak level
(1 in 50 year event)

Existing peak level
(1 in 100 year event)

Construction (stage 1) peak change
(1 in 100 year event)

Impact of design
(1 in 20 year event)

Impact of design
(1 in 50 year event)

Impact of design
(1 in 100 year event)

Construction

Flood level increases are expected to be between 0.02 and 0.1 metres in the 1 in 100 year flood event. Some residential properties along the proposal would experience an afflux of up to 0.1 metres and some industrial properties would experience an afflux of up to 0.05 metres. A Flood Management Plan would be developed for during construction to minimise flooding impacts.

Operation

Flood level is expected to increase up to 0.25 metres at the rail maintenance facility located along the north-western boundary of the Proposal. In the 1 in 50 year flood event, flood levels increases between 0.01 and 0.1 metres are expected to occur. The large majority of flood-affected residential, commercial and industrial properties in the existing case experience negligible change in flood depth (less than 0.01 metres change) and flood hazard during operation of the Proposal. Flooding impacts during operation would be reviewed during detailed design and in consultation with affected residences where relevant.

Hydrology

The proposal will maintain existing water flow under Maitland Road to Hexham Swamp during operation and no changes are expected from the proposal to the existing surface water hydrology including for sensitive receiving environments such as Hexham Swamp, the surrounding Coastal Wetlands, freshwater wetlands or Ramsar listed wetlands.

Download Chapter 6.2 Flooding & Hydrology

Previous – Noise Next – Biodiversity

Back to categories

Biodiversity

Map layers

Coastal wetlands

Ramsar wetlands

Threatened fauna

Threatened Ecological Communities (TEC)

Under the BC Act

Under the EPBC Act

Under the FM Act

The proposal aims to minimise impacts to biodiversity by using the current space within the existing median and road shoulder along Maitland Road.

The biodiversity assessment for the REF area concluded with a high level of certainty that the impacts to threatened ecological communities and threatened species are unlikely to be significant.

About 3.82 hectares of native vegetation would be removed within the REF area, including potential habitat for 14 threatened animal species.

During survey, Southern Myotis were found to be using Ironbark Creek Bridge for foraging, roosting and breeding, which will result in a Microbat Management Plan (MMP) being prepared prior to construction.

A biodiversity offset strategy would be prepared to address unavoidable impacts to flora, fauna and ecological communities. This would be developed as part of detailed design and in consultation with relevant stakeholders.

Threatened Ecological Communities (TEC)

The proposal would require the removal of 3.82 hectares within the REF area of native vegetation including three plant community types (PCTs) that are considered to be threatened ecological communities (TEC) under the Biodiversity Conservation Act 2016 (BC Act). Two of these PCTs also fulfill the requirements for one of the TECs listed under the Environment Protection Biodiversity Conservation Act 1999 (EPBC Act), and two of the PCTs are also protected wetland saline community species listed under the Fisheries Management Act 1994 (FM Act). The PCTs and their TEC status include:

Swamp Oak swamp forest fringing estuaries, Sydney Basin Bioregion and South East Corner Bioregion (PCT 1234) (endangered BC Act)
Phragmites australis and Typha orientalis coastal freshwater wetlands of the Sydney Basin Bioregion (PCT 1071) (endangered BC Act)
Saltmarsh Estuarine Complex (PCT 1746) (endangered BC Act, vulnerable EPBC Act and protected FM Act)
Grey Mangrove low closed forest (PCT 1747) has a cover of saltmarsh species >50% and therefore constitutes Subtropical and Temperate Coastal Saltmarsh (vulnerable EPBC Act and protected FM Act)

Download Chapter 6.1 Biodiversity

Previous – Flooding & Hydrology Next – Traffic

Back to categories

Traffic

Travel times

2028 with
the project
Morning travel time:

6 minutes
(saving 7 mins)
Afternoon travel time:

6 minutes
(saving 3 mins)
2028 without
the project
Morning travel time:

13 minutes
Afternoon travel time:

9 minutes

Traffic modelling shows that peak period traffic demand along the Proposal would increase by between two and ten per cent (depending on location and peak) by 2028, resulting in average speeds across the network reducing by 34 per cent in peak periods. By 2038, additional planned network changes and proposed urban renewal are forecast to further increase peak period traffic demands.

The Proposal would result in:

Improved average travel speeds by about 34 per cent in 2028, about 31 per cent in 2038 and by about 27 per cent in 2048
The removal of existing breaks in the median resulting in loss of right turn access at a number of local streets along the Proposal. This would improve safety, but would result in less direct local access
Reduce risk of right turn related crashes at intersections and reduced congestion related crashes along the Proposal

During construction there would be travel delays that would affect commuter, bus and heavy vehicle traffic. There may also be temporary restrictions on property access for residents and businesses.

To mitigate impacts to traffic, businesses and residents, construction is proposed to be staged to ensure Maitland Road remains open in both directions during the extent of construction works, minimising disruptions to general traffic, public transport, pedestrian and cyclist, rail and maritime traffic movements. Transport would consult with affected people along the corridor about property access before the start of construction.

Download Chapter 6.6 - Traffic and transport

Previous – Biodiversity

Back to categories