This article is about the Class III road numbered C99 maintained by DfI Roads.
For other roads numbered C99, see C99
The C99 starts on the B17 just to the east of Bushmills and heads south. Soon there is a T junction where the road turns off to the right. Heading east initially, the road gradually swings in a more southerly direction until it reaches Liscolman, where there is a sharp right hand turn leading it west. There is another sharp turn to the left at the opposite end of the village and the road heads south from here. The road then meets the B67 and the B86 at a crossroads west of Toberdoney.