Roads will be closed in Wells on Thursday to allow for sea defence testing in the town.
There will be no access between Freeman Street and The Quay from 5am to 11am on October 7.
Traffic will be able to access Beach Road from Freeman Street.
The East Anglian branch of the Environment Agency is carrying out routine testing of the winching mechanism at the Wells Gate flood defence.
A spokesperson from the Environment Agency said: "The tests are part of our normal training that we conduct every year in the Wells area to ensure the flood gate mechanisms are working correctly.
"The tests and training will be carried out by our operations team in order to ensure everything is working properly ahead of winter when flooding is more likely.
"Our operations staff will also be trained to ensure they are prepared in case of any incident response."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here