A14 Orwell Bridge: New speed limit signs installed at Ipswich

The new electronic speed control signs will show change to 40mph in high winds

Work to install electronic speed limit control signage on a major road bridge is complete - allowing it to stay open in high winds more often.

The A14 Orwell Bridge at Ipswich is prone to closure on safety grounds if winds exceed 50mph (80km/h).

Engineers have spent two months adding signage and cabling to enforce speed limits in a £1.7m package of measures.

A Highways England spokesman said drivers can expect "more reliable journeys" and "less congestion".

The bridge carries 60,000 vehicles a day and is an important route for lorries using the UK's biggest container port at Felixstowe.

The dual carriageway has been closed more than 20 times since 2013, which usually results in gridlock in Ipswich as traffic is diverted through the town.

The A14 links the Port of Felixstowe to London and the Midlands

The improvements followed a year-long study by City University, London, which concluded that bridge should be closed in winds of 60mph (90km/h), but that it could remain open in winds of 45-60mph (70-95km/h) if traffic moved more slowly.

The vehicle speed limit will be reduced from 60mph to 40mph (65km/h) in such winds.

Average speed cameras were introduced on the bridge in 2016 and new cameras have been installed linked to the news speed control signs.

Martin Fellows, Highways England regional director, said: "The bridge will be able to remain open more often, meaning more reliable journeys for drivers, local residents, businesses and hauliers, and less congestion in town."

• High winds close A14 bridge

• Orwell Bridge closure 'costs town £1m a day'

• Winds forced eight-hour bridge closure

The bridge, which stands 43m (141ft) at its highest point, opened in 1982.

When the bridge is closed it leads to long tailbacks on the A14 itself, and in Ipswich where traffic is diverted

Suffolk Police said the new measures would bring "tangible improvements".

Ipswich MP, Tom Hunt, said the work was "a big task .. but a necessary one".

"I know that some have been frustrated that a solution wasn't implemented sooner," he said.