More than 180 businesses in the North West have signed an open letter calling for urgent progress to the delayed A5 road upgrade.
A total of £90million has already been spent on the project without any construction having started, while total estimated costs have ballooned to more than £1.6billion.
Attempts by the Department for Infrastructure to progress the scheme, which would upgrade the entire section of the road from Newbuildings to Aughnacloy to dual carriageway, have been thwarted by a succession of legal challenges.