The new fund seeks to boost PPP projects. The funds will be provided by IDB and the World Bank.
The increase takes effect September 14.
The bridge is on the Pirámides-Texcoco highway and collapsed following last week's 8.2 magnitude earthquake.
Invepar holds the concessions for Guarulhos international airport in São Paulo state and the Rio de Janeiro metro.
The state auditor said the bank received warnings as early as 2015 regarding the reputation of the consortium, which received US$41mn in loans, due to the Odebrecht corruption scandal.
Peru's infrastructure is about to see the biggest investment drive in the country's history, as President Kuczynski seeks to rebuild the flood-battered country.