Network Rail has set up a public email address for residents in Castle Cary and Ansford ahead of the proposed 19-week closure of the A371, starting in January.
The company needs to undertake essential improvement works to Ansford Bridge near Castle Cary Railway Station.
Robin Basu, Network Rail's community relations manager, Western, said: "We acknowledge that we did not liaise with the community in a timely or adequate manner and we apologise for this.
"Our next steps will be to give an opportunity for people to share their concerns and also to provide suggestions on how the impact of the road closure can be minimised."
To enable this, Network Rail has set up a special email account, email@example.com, where concerns and suggestions can be directed. This facility will be open until Sunday, October 7, 2012.
The company will then collate all information received and hold two meetings in October, with representatives from the community present, to discuss the concerns raised and agree on an achievable plan of mitigation measures.
Anyone with additional questions or concerns should visit www.networkrail.co.uk or telephone our 24-Hour National Helpline on 08457 114141.