Skibbereen to Crookhaven:

https://www.google.ie/maps/place/Crookhaven,+Co.+Cork/@51.4684039,-9.8661164,11z/data=!4m5!3m4!1s0x48458598cbd7f471:0xa00c7a99731a1a0!8m2!3d51.4683386!4d-9.7259903

Griffith’s ‘Wellesley Roads’ included Skibbereen to Crookhaven, 46 km. built between 1826 and 1829 and costing £13,466,

Griffiths  Cork projects known as the ‘Wellesley Roads’ included Skibbereen to Crookhaven, 46 km. built between 1826 and 1829 and costing £13,466, Bantry to Skibbereen, Crookhaven to Bantry and the road to north Cork to Banteer.   HIs works are characterised by a high degree of engineering excellence. It was said that in building bridges he insisted on going to bed rock for foundations, the Grand Jury contractors would be happy with building on gravel resulting in so many were washed away in floods.  His schemes highlights the deficiencies of the Grand Jury system and might be looked at like the recently completed motorway schemes in Ireland. The effects were dramatic, on the Mizen Peninsula they first wheeled carts made their appearance.  Alexander Nimmo (1783-1832), the Scots Engineer who was also involved said the North Cork Road opened up the entire area to commerce with a beneficial result.

https://durrushistory.com/2016/12/12/1824-evidence-of-sir-richard-griffith-esq-road-engineer-to-house-of-commons-select-committee-on-harmony-in-west-cork-between-protestant-and-catholics-distress-of-1822-only-part-of-ireladn-he-e/

https://durrushistory.com/2015/07/12/griffiths-roads-report-of-patrick-leahy-civil-engineer-1834-to-co-cork-grand-july-of-progress-of-road-from-dunmanus-bay-to-skibbereen-nearly-completed-extension-to-ballydehob-approved-and-re/