Grant Shapps says the Department for Transport will fund a third of bridge repair
But he called on council and TfL to get bridge open to pedestrians this summer
Bridge has been closed to traffic since April 2019 after cracks were discovered
There are fears the repairs could take years due to the complicated nature of fix
The council has proposed a £3 toll and a temporary double-decker structure
But Mr Shapps said he is becoming 'concerned' about the speed of the project