The main cables of the Golden Gate Bridge are being renovated for the first time since the span opened in 1937.

Once the scaffolding is set up, bridge officials tell the Marin Independent Journal “that crews will begin cleaning the exterior of two main cables and scraping their surfaces so a new coat of paint can be applied.”

The work is expected to begin on the west side main cable and officials say the project should be completed in three years.

The Golden Gate Bridge District was originally going to contract out the work for $30 million, but ultimately decided to use its own workforce.

The work is not expected to affect traffic, although the paper reports that bicyclists may be asked to walk their bikes through the work area.

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