Repairs to a Cavan bridge have been halted by concerns over Atlantic Salmon.
Councillor Val Smith is calling for common sense to prevail and for works to be allowed at Assan Bridge while funding is available.
Assan Bridge crosses the River Blackwater just northeast of New Inns and is on the direct route between Ballyjamesduff and Cootehill.
The bridge is said to be in a bad state of repair, and HGVs struggle to make the narrow "S-bridge" without reversing.
Construction of a straight-through bridge was set to begin this year, however the plan involved realigning the water flow below and therefore required the approval of Inland Fisheries Ireland.
On-site engineers approved the works, but a senior official said changing the path of the water would interfere with the Atlantic Salmon and brown trout in the river and the flies that they feed on.
Fine Gael's Val Smith says he accepts legitimate objections for wildlife, but this is a "step too far".
Consultants have been recalled by Cavan County Council to identify an alternative design, with the funding now to be redistributed to other bridges across the county.
Councillor Smith says the "tremendous work" has been wasted as it means the repairs have been delayed further.