You did raise a point that there should be a central portal that's easy to access. I would consider the municipal financing authorities. Perhaps the government would be able to work through that, or even allow gas-tax monies to be mortgaged out over a period of time, so that the construction of larger projects could be paid through gas taxes.
I'd like to go back to talking about infrastructure in general. Do you believe there's a difference between shovel-ready and shovel-worthy? This means that the government, rather than going across the board with just any infrastructure spending, should be focusing on productive infrastructure or quality-of-life infrastructure, like sewers and water, and things that help our communities.