There is extra support for housing, schools, flood protection and transport.
Some £30m has been allocated to increase housing supply, comprising an additional £20m for the social housing grant and £10m to expand the pilot of the Houses into Homes initiative to bring empty homes in Wales back into use.
The 21st Century Schools building programme is given an extra £25m.
There is £11.5m for a new railway station in Ebbw Vale town centre.
An additional £10m has been put to the flood and coastal risk management programme.
Finance minister Jane Hutt said: “The £76.5m of additional capital investment I am announcing today supports the priorities set out in the Wales Infrastructure Investment Plan for Growth and Jobs and ensures every Welsh pound is used to boost jobs and growth.”
She added: “Based on the latest OBR public expenditure forecasts, by 2017-18 our capital budget will have fallen by a further 20% in real terms. We expect to have up to £4bn less capital available over the 10 years from 2012-13 to 2021-22 period than was available in the previous 10 years.
“Despite these severe reductions, we are using every tool at our disposal to maximise investment in our infrastructure, creating the conditions necessary to enable businesses to create jobs and boost sustainable economic growth while delivering real and long-lasting change for people in Wales.”