Galway County Council is being asked to undertake an engineering study on all road bridges in the Lettermore-Lettermullen peninsula as a "matter of urgency".
A meeting of Oireachtas members, local representatives and activists of the island community in southwest Conamara (Connemara) heard people's concerns about the situation.
Locals have deemed the infrastructure, part of the R374 network, "unfit for purpose" and "downright dangerous" for some time now, and have appealed for political intervention to rectify the situation.
They plan to contact Galway County Council followed by the Department of Transport and Minister Eamon Ryan.
Minister Ryan has been accused by local activist group Grúpa Gnímh Bhóithre Chonamara of continuously ignoring the problem despite "various entreaties".
The group wants the bridges renovated, and the road from Lettermullen in the west to Bealadangan in the east, widened and upgraded.
Members are also demanding island status for the area to secure better funding, and are looking for a ferry service and fire brigade services.
Three Galway West TDs and other public representatives were today given a first-hand view of the problems associated with the infrastructure of some bridges in the area.
Maidhc Ó Curraoin, chair of Grúpa Gnímh Bhóithre Chonamara, hosted a boat trip so the representatives could view what he called "structural and corrosive" damage under the bridge.
The activists want the bridges upgraded and the local road network widened for safety reasons. They have also campaigned for a cycling track.
Mr Ó Curraoin has previously said it is "only a matter of time" before someone is killed or seriously injured on the stretch of road from Lettermullen to Bealadangan.
The TDs present today included Fianna Fáil's Éamon Ó Cuív, Sinn Féin's Mairéad Farrell and Independent Noel Grealish.
Former TD Senator Seán Kyne (Fine Gael) was also on the boat trip along with some local councillors.
Independent Catherine Connolly visited the area last year, the first TD to do so, according to local activists.
