On 20 January, the Scottish Parliament began an inquiry led by the Infrastructure and Capital Investment Committee (ICI) to determine the circumstances that led to the discovery of a cracked truss in the bridge's undercarriage.
Evidence was heard from: FETA, Transport Minister Derek Mackay, engineers and officials from Amey along with a number of other experts and key personnel.

On the first day, Richard Hornby, of engineering consulting firm Arup, stated that the truss end in question had been inspected 23 times since 2001, and no fault had been found.
It was revealed that a pin had seized up, which caused the truss end to crack, and it was only the quality of the steel which had stopped its cracking appearing earlier.
Hornby also made clear that even if the seized pin had been picked up earlier, it was "virtually impossible" to lubricate the bearing.
Several witnesses defended a decision by previous operator FETA not to proceed with a £15 million truss end link replacement project in 2010.
This was disputed by Barry Colford, former chief engineer and bridgemaster at FETA.
Lesley Hinds, FETA's former convener, pointed out that the bridge budget had been cut by 58% in 2011, while senior staff at FETA had "deep concerns" about the transfer of bridge management to a private company.
On 20 January, the Scottish Parliament began an inquiry led by the Infrastructure and Capital Investment Committee (ICI) to determine the circumstances that led to the discovery of a cracked truss in the bridge's undercarriage. Evidence was heard from: FETA, Transport Minister Derek Mackay, engineers and officials from Amey along with a number of other experts and key personnel.
On the first day, Richard Hornby, of engineering consulting firm Arup, stated that the truss end in question had been inspected 23 times since 2001, and no fault had been found. It was revealed that a pin had seized up, which caused the truss end to crack, and it was only the quality of the steel which had stopped its cracking appearing earlier. Hornby also made clear that even if the seized pin had been picked up earlier, it was "virtually impossible" to lubricate the bearing. Several witnesses defended a decision by previous operator FETA not to proceed with a £15 million truss end link replacement project in 2010. This was disputed by Barry Colford, former chief engineer and bridgemaster at FETA. Lesley Hinds, FETA's former convener, pointed out that the bridge budget had been cut by 58% in 2011, while senior staff at FETA had "deep concerns" about the transfer of bridge management to a private company.
Forth Road Bridge