For regular travellers on the A470 between Llanrwst and Glan Conwy news that the current roadworks between Glan Conwy and Bodnant are only the start of the bigger improvement project slated to start sometime this year probably won't be welcome.
The WA (whose web page on road schemes is singularly uninformative and hasn't been updated since 2010) state that "a scheme is starting in 2014 covering a length of 3.2 km running towards the coast between the road just to the North of the Maenan Abbey and finishing at a property called 'Dyto'". For three years there's been a test bed piece of road in the lowest-lying section, which can be seen from the train but not from the present road route. This was constructed to test the viability of taking out the awkward 'dog-leg' turn at the end of the narrower section of road running North from the Maenan before making a sharp right turn, followed by a less sharp but potentially more dangerous left. The test bed can be seen clearly on Google Earth at W 3 49'30" and N 53 11'49.92'.
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Earlier in February large numbers of trees were felled in the land immediately adjacent to the present road and the railway track, effectively commencing the process of widening the present road and creating a wider, smoother run, which will cross behind the current caravan parking area, seen on the right of the picture above.
It's likely that most of the scheme will not affect the current road, but the section to the South, with the first sharp right hand turn runs very close to the railway line, so that is likely to cause some issues.