Impacts

Access traffic impacts

Projected traffic flows for western access options

AM peak hours PM peak hours

Low flow increase

Medium flow increase

High flow increase

Low flow decrease

Medium flow decrease

High flow decrease

Projected traffic flows for western access options

Projected traffic flows for southern access options

AM peak hours PM peak hours

Low flow increase

Medium flow increase

High flow increase

Low flow decrease

Medium flow decrease

High flow decrease

Projected traffic flows for southern access options

We have undertaken a traffic modelling exercise to assess the impact of each option. On the wider highway network, the impact of each access option is very similar and results in some increases in traffic flows, as would be expected for a major site development. The impact of the southern access option is slightly less as it enables greater spread of trips around the city. An indication of the traffic impacts on the local highway network is shown on the diagrams for the Southern option and Western options.

An access to the west also provides an alternative route to Leeman Road, greatly reducing trips on residential streets to the north of the site. There are moderate increases in traffic on Water End and the A19 as a result of new development trips and greater increases in trips on Poppleton Road, with existing trips diverting away from Water End.

The southern access option provides a new access to the south / west of the rail lines. The traffic flows are predicted to have a greater increase on the A59 Poppleton Road, close to the proposed access, but slightly reduce trips on some routes as existing trips divert away from the A59. There are also moderate increases in traffic on Water End and the A19.

For all access options, the modelling predicts slight reductions in trips on some city centre routes because additional routes are available through the site – for example, on the A1036 and Queen Street as indicated by the blue lines to the east of the station.

Comparison

The assessments we have undertaken can be used to help select an access option. More detailed assessments will be carried out as part of future planning applications.

Western option 01

Western option 02

Southern option

Construction

Transport

Townscape

Heritage

Air quality

Noise

Ecological

Flood risk

Community impact

We have assessed the areas of impact for each access option as shown in the table above (also see the descriptions of each area of impact below). We would like your views on the community impacts associated with each access option as part of this consultation.

High impact

Medium impact

Low impact

What do we mean by?

Construction

Complexity of bridge design and integration with existing highway and utility infrastructure

Transport

Predicted changes to traffic flows using the city-wide traffic model

Townscape

Potential impacts on views across the site including towards the historic city

Heritage

Impacts on known heritage features on or adjacent to the site

Air quality

Predicted changes in air quality associated with the access option

Noise

Potential noise impact associated with the access option

Ecological

Any direct impacts on defi ned ecological spaces within the site

Flood risk

Proximity of access to low, medium and high flood zones as mapped by the Environment Agency

Explanation

Further detail on the impacts assessed is set out in the table below. We would like your views on the importance of these impacts in choosing the access option to take forwards. See the full ‘non-technical summary’ document here.

Western option 01

Western option 02

Southern option

Area of impact

Commentary

Construction

Western option 01 will require the construction of a new bridge at Water End over the East Coast Main Line and further works to the existing bridge at Water End to create a right turn lane into the site.

Western option 02 would not require changes to the existing bridge over the East Coast Main Line at Water End.

The road alignment passes across Flood Zone 2 and Flood Zone 3.

The Southern option would consist of a single span bridge.

It will require the relocation of an existing electricity sub-station.

Western option 01 will require the construction of a new bridge at Water End over the East Coast Main Line and further works to the existing bridge at Water End to create a right turn lane into the site.

Western option 02 would not require changes to the existing bridge over the East Coast Main Line at Water End.

The road alignment passes across Flood Zone 2 and Flood Zone 3.

The Southern option would consist of a single span bridge.

It will require the relocation of an existing electricity sub-station.

Transport

Western option 01 has a slightly higher impact on network-wide delays compared to the Southern option.

Western option 02 has a slightly higher impact on network-wide delays compared to the Southern option.

The Southern option has a slightly lower impact on network-wide delays.

Western option 01 has a slightly higher impact on network-wide delays compared to the Southern option.

Western option 02 has a slightly higher impact on network-wide delays compared to the Southern option.

The Southern option has a slightly lower impact on network-wide delays.

Townscape

A tied arch bridge would be required for Western option 01 due to the required span over the East Coast Main Line. This may increase the townscape impact compared to Western option 02 and the Southern option.

The Leeman Road Millennium Green Mosaic may be affected by the Western option 01.

There may be some visibility of the new access route from long
distance views towards the Minster depending on the height of any required bridge structures.

The Leeman Road Millennium Green Mosaic may be affected by the Western option 02.

There may be some visibility of the new access route from long distance views towards the Minster depending on the height of any required bridge structures.

Holgate Community Garden will be affected by the Southern option.

A tied arch bridge would be required for Western option 01 due to the required span over the East Coast Main Line. This may increase the townscape impact compared to Western option 02 and the Southern option.

The Leeman Road Millennium Green Mosaic may be affected by the Western option 01.

There may be some visibility of the new access route from long
distance views towards the Minster depending on the height of any required bridge structures.

The Leeman Road Millennium Green Mosaic may be affected by the Western option 02.

There may be some visibility of the new access route from long distance views towards the Minster depending on the height of any required bridge structures.

Holgate Community Garden will be affected by the Southern option.

Heritage

There would be no loss of any designated heritage assets as a result of Western option 01.

There would be no loss of any designated heritage assets as a result of Western option 02.

There would be no loss of any designated heritage assets as a result of Southern option.

The Southern option is close to an Area of Archaeological Interest.

There would be no loss of any designated heritage assets as a result of Western option 01.

There would be no loss of any designated heritage assets as a result of Western option 02.

There would be no loss of any designated heritage assets as a result of Southern option.

The Southern option is close to an Area of Archaeological Interest.

Air quality

The site is within Air Quality Management Areas.

Only slight impacts on air quality are predicted with Western option 01.

The site is within Air Quality Management Areas.

Western option 02 moves the western access closer to residential properties and therefore has a greater potential for air quality impacts than Western option 01.

The site is within Air Quality Management Areas.

Higher pollutant concentrations are predicted with the Southern option.

The site is within Air Quality Management Areas.

Only slight impacts on air quality are predicted with Western option 01.

The site is within Air Quality Management Areas.

Western option 02 moves the western access closer to residential properties and therefore has a greater potential for air quality impacts than Western option 01.

The site is within Air Quality Management Areas.

Higher pollutant concentrations are predicted with the Southern option.

Noise

Western option 01 is further away from residential properties than Western option 02 and therefore has a lower potential for noise impact than Western option 02.

Western option 02 moves the western access closer to residential properties and therefore has a greater potential for noise impact than Western option 01.

The Southern option results in the greatest noise impact at nearby properties because of the proximity of the access road to the residential properties and partially because of the elevation of it above ground.

Western option 01 is further away from residential properties than Western option 02 and therefore has a lower potential for noise impact than Western option 02.

Western option 02 moves the western access closer to residential properties and therefore has a greater potential for noise impact than Western option 01.

The Southern option results in the greatest noise impact at nearby properties because of the proximity of the access road to the residential properties and partially because of the elevation of it above ground.

Ecological

No statutory nature conservation designated sites were identified within the site boundary or adjacent to the site. Western option 01 is located in Millennium Green which is a local Site of Importance for Nature Conservation.

Western option 02 moves development further into the Millennium Green which is a local Site of Importance for Nature Conservation. This may require additional ecological improvements to be developed.

The Southern option is not located in close proximity to any statutory or non-statutory sites.

No statutory nature conservation designated sites were identified within the site boundary or adjacent to the site. Western option 01 is located in Millennium Green which is a local Site of Importance for Nature Conservation.

Western option 02 moves development further into the Millennium Green which is a local Site of Importance for Nature Conservation. This may require additional ecological improvements to be developed.

The Southern option is not located in close proximity to any statutory or non-statutory sites.

Flood risk

Part of Millennium Green is categorised as Flood Zone 3, and the remainder as Flood Zone 2.

Part of Millennium Green is categorised as Flood Zone 3, and the remainder as Flood Zone 2. More of Western option 02 is located within Flood Zone 3 compared to Western option 01.

An area at the junction of Holgate Road and Chancery Rise is within Flood Zone 2. The southern option has the least impact on existing Flood Zones.

Part of Millennium Green is categorised as Flood Zone 3, and the remainder as Flood Zone 2.

Part of Millennium Green is categorised as Flood Zone 3, and the remainder as Flood Zone 2. More of Western option 02 is located within Flood Zone 3 compared to Western option 01.

An area at the junction of Holgate Road and Chancery Rise is within Flood Zone 2. The southern option has the least impact on existing Flood Zones.