Options for the new bypass
- Outer Western Route
- Cutting a swathe through Dinefwr Park this route will have major environmental impact. Acquisition from the National Trust could make this route unviable.
- Inner Western Route
- As with the Outer Western Route this proposal will have major environmental impact and involve land acquisition from the National Trust.
- Inner Eastern Route
- Concerns raised at the Local Public Enquiry in 1993 would need to be addressed. This would seem to be the most likely route.
- Outer Eastern Route
- This route is affected by planning restrictions on the development of the flood plains.
Information from the Welsh Assembly Government - A483 Swansea to Manchester Trunk Road (Llandeilo and Ffairfach), published April 2006.
Criteria key:
- 1.
- Accessibility (Severance and journey times)
- 2.
- Safety (Non-motorised and through trafic reduction)
- 3.
- Environment (Landscape/visual, ecology/nature conservation, cultural heritage, river dynamics, air quality/noise)
- 4.
- Economy (Construction complexity, indicative cost)
- 5.
- Integration (Policy proposals, network proposals)
| Criteria | Outer Western Route | Inner Western Route | Inner Eastern Route | Outer Eastern Route |
|---|---|---|---|---|
| 1. | Deviates furthest from the existing route resulting in the least reduction of through traffic and journey time. | Deviates further from the existing route than the Purple Route resulting in less reduction of through traffic and journey time. | The most direct route providing the greatest reduction in through traffic and improvement of community severance. Largest journey time saving. | As the Purple Route for A483 users, however poor links with A476 limiting its effectiveness in reducing through traffic. |
| 2. | Offers least reduction in through traffic and improvement for cyclists and pedestrians as the route is furthest from the existing route. | Offers less reduction in through traffic and improvement for cyclists and pedestrians than the Purple Route as the route is further from the existing route. | Offers largest reduction of through traffic and greatest improvement for cyclists and pedestrians in the town. | Offers less reduction in through traffic and improvement for cyclists and pedestrians than the Purple Route as the route is further from the existing route and links poorly with the A476. Closer to schools at Ffairfach. |
| 2. | As for the Purple Route but avoids the railway station. Most direct impact on land owned by the National Trust at Dynevor Estate. | As for the Purple Route but avoids the railway station. Direct impact on land owned by the National Trust at Dynevor Estate. | Impact on the Special Area of Conservation(SAC), Site of Special Scientific Interest (SSSI), Historic Landscape and the River Towy flood Plain. The railway station will be affected. | As for the Purple Route but would be constructed entirely in flood plain. Close to Brecon Beacons National Park. Increase in noise and air quality impact on schools at Ffairfach. |
| 4. | Cost of scheme is highest as a result of the wide flood plain crossing, larger structures, and greatest scheme length. | Cost of scheme is higher than for the Purple route as a result of the wide flood plain crossing, larger structures, and greater scheme length. | Cost of scheme is lowest as it has the shortest floodplain crossing and shortest scheme length. | Cost of scheme is higher than for the Purple route as a result of complex structures to cross the railway and greater scheme length. |
| 5. | Integrates well with the proposed A476 trunking. | Integrates well with the proposed A476 trunking. | Integrates well with the proposed A476 trunking. | Does not integrate well with the proposed A476 trunking. |
Route Comparison Findings
The comparison table shows that the existing Protected Route (Inner Eastern Route) potentially offers the greatest reduction in traffic passing through Llandeilo and Ffairfach. It provides the greatest benefits to the community in terms of severance, safety and improved journey times. It also avoids National Trust land at Dynevor Park and has least environmental impact, particularly on the floodplain.
The above information comes from the "Welsh Assembly A483 Swansea to Manchester Truck Road (Llandeilo and Ffairfach) Public Workshop and Consultation" document 2006.
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