£250,000 refurbishment starts today.
The essential maintenance upgrade is being planned to take up to six weeks and will mean the bridge will be reduced to a single lane controlled by traffic lights in each direction.
At peak times staff will be on site at the bridge to manage the temporary traffic lights to help improve traffic flow.
Mark Thomas, Cabinet Member for Environment and Infrastructure at Swansea Council, said: “Loughor Bridge is a busy route and is used by hundreds of vehicles every day.
“Due to the weight of traffic and wear and tear, it now needs to be relined and resurfaced so that it will provide many more years of service to motorists living on both sides of the estuary.
“We’d urge people to use alternative routes where possible during the roadworks as delays each side are inevitable. But we will be putting teams on site between 7.30am and 9.30am and 3.30pm and 7pm to help manage traffic flow as effectively as possible.”
The work, which is being carried out on behalf of Swansea Council, had been planned for some time and is starting next week to take advantage of lower than normal traffic flows due to the Coronavirus pandemic.
All staff working on the project will maintain social distancing, following Welsh Government guidelines.
Cllr Thomas said: “Despite Coronavirus, the council is continuing to invest in our city’s transport infrastructure network for the benefit of our communities and to keep traffic on the move.
“We want to apologise in advance for any delays caused due to these important roadworks. We’ll continue to monitor the situation and consider any changes that might help reduce congestion as the project.
“We’d urge the public to choose an alternative route if possible during this period and respect the safety of the teams doing the work.”