Clwyd South MP Susan Elan Jones has written to Network Rail Chief Executive Mark Carne calling for the new footbridge at Chirk railway station to be opened.
"Local residents and I are fed-up with the delay. It's totally unacceptable," she said.
"Local rail-users were delighted when the Friends of Chirk Station and representatives of Network Rail and Alun Griffiths Contractors worked together to secure this major improvement.
"However, the newly installed footbridge still hasn't been opened. It isn't fair on local residents, especially those who carry heavy cases or need it for reasons of mobility."
In her letter to the Network Rail boss, Ms Jones (pictured left) asks why the opening has been "so delayed".
She added: "There's a suggestion that the bridge hasn't been opened because of the need for extra lights. But whatever the reason - Network Rail need to clarify what is going on and how long the work will take, and then they need to get the footbridge opened. This matter needs to be sorted urgently."