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Public consultation on proposed grade separated junctions at gonerby moor, colsterworth and carpenters lodge
Proposal for colsterworth
Proposal for Colsterworth
At Colsterworth a bridge would be constructed over the A1 to carry traffic between the B676 and A151. The existing roundabout would be removed but new slip roads would be provided to allow traffic to leave and enter the A1 from and to the A151 and B676. The gap in the central reservation at the A1/B6403 junction would be closed to prevent traffic crossing the A1 at this location. A new road would be provided to link the B6403 (east) to the new A1/A151/B676 junction. All other roads would be retained to maintain access to services and to Colsterworth. The A1 would be realigned slightly for about 400m north and south of the existing roundabout to accommodate the new slip roads.
It is estimated that the works will cost about £7m
Benefits
This proposal would provide the following benefits:
- Reduce congestion
- Improve safety
- A safe route across the A1 for pedstrians, cycists and equestrians
Other Proposals Considered
Other proposals were considered but rejected due to a combination of reasons. A proposal to take the B676 to A151 link road under the A1 was rejected due to significant increases in construction costs and disruption to traffic during construction. A proposal to provide a link road on the south side of the roundabout was rejected due to increased costs and its impact on a proposed industrial site. A bridge providing access to the A1 from the B6403 was rejected due to environmental impact, increased construction cost and disruption to traffic during construction.
Summary of Scheme Impacts
| CRITERIA | SUB-CRITERIA | IMPACT OF PROPOSAL | COMMENTS |
|---|---|---|---|
| Environent | Noise | With the exception of 2 properties, there will be no significant increase in noise levels. | New sections of road will use low noise surfacing. |
| Air quality | Slight adverse impact on local air quality. | The new junction will reduce pollution from traffic congestion, but junction will be nearer to properties. | |
| Landscape | The section of the new junction on raised embankment will have an adverse visual impact on nearby houses. | The embankment will be overwidened and shaped on the village side to help screen traffic. Once established new tree and shrub plantations will provide significant additional screening. | |
| Archaeological heritage | Very slight impact on known features. | Area around Ermine Street to be further surveyed. | |
| Nature Conservation | Slight disruption to flora on verges at B6403. | Site will be protected during construction. The opportunity to create new roadside habitates will be taken. | |
| Water Environment | No detrimental effect on the water environment. | Pollution traps will be installed in the highway drainage system where appropriate. | |
| Safety | Accidents | Significant reduction in accidents. Reduction in driver stress. | Crossing the A1 on foot/cycle will be safer and easier. |
| Economy | Transport economics | Reduced journey times and journey costs. | Significantly reduced economic cost of delays and accidents. |
| Journey times | Journey times can be predicted more accurately. | Travellers much less likely to encounter unexpected delays and accidents. | |
| Accessibility | Access to the Transportation System. | Negligible impact on access to transport services. | - |
| Severance | Pedestrian, cyclists and vehicular movement across the junction will be much improved. | The A151 to B676 link road would provide improved pedestrian routes. | |
| Integration | Land use policy | Local land use policies recognise the importance ofthe A1 route and proposals to improve its safety and efficiency are endorsed. | - |
| Works | Disruption during construction | Some short-term lane restrictions would be required during the construction of the tie-ins on the new junction. | Temporary speed limit will be in force during construction. |
