M1 Rolling Crown


The M1 northbound near Junction 38 in West Yorkshire was experiencing drainage concerns as a result of the geometric layout. The collision statistics (10 collisions resulting in 26 casualties over five years) showed that wet weather was influencing the safety record above the national average at this location.

To mitigate the risk we accelerated a Minor Safety Improvement Fund (MSIF) scheme from the 2018/19 programme.

Over 3 nights in February 2018, we completed £100k of resurfacing work, 3,708m2 of carriageway over a 230m length.

The designer applied 3D modelling using specialist AutoCAD Civil 3D software to build a model of the carriageway at this location. Our designers then used the software along with engineering expertise to design a re-profiled carriageway with a rolling crown to drastically minimise the risk of future drainage problems in this location. Installing the rolling crown included raising the carriageway in some areas by as much as 115mm above the existing levels and re-profiling reduced the water run-off flow path length in the carriageway from around 80m to less than 15m ensuring water run-off is removed from the carriageway much quicker.

To ensure the model could be achieved on site, supply chain contractors Lane Rental Services and Aggregate Industries used a mixture of constant and profile planing and surfacing. We also installed 13 new gullies to accommodate the re-distributed run-off.

How does the scheme statistica measure up against the recent Winter Olympic achievements?

  • The resurfaced 3,708m2 of carriageway  area is more than twice the size of the Olympic figure skating rink in Pyeongchang, where 15 year old Alina Zagitova from Russia won gold in the women’s figure skating

 

  •  The length of the rolling crown surfacing at 230m is more than twice the distance achieved by the Pyeongchang Olympic ski jumper Andreas Wellinger from Germany who won the gold medal in the men’s normal hill individual ski jumping