Fixed it for you.
Roads to nowhere are killing the country in maintenance costs and the other hidden costs of sprawl. Every capital project, both repair of existing and new, needs to have the maintenance costs analyzed. Ditching new highways in favor of improving rail freight would save the country more money than any other transportation projects first. Then move onto eliminating lots of frivolous secondary highways and focus on federal funding only going to roads on key corridors, critical resource, manufacturing, research, and population centers.
Lurk -- I can live with that as long as the same criteria is applied to the frivolous long-haul passenger trains run by Amtrak just because various Congress persons are involved.
I would suggest the following process:
1) a complete study of all the critical economic corridors to identify the critical highways, railways, airports, seaports and all the accessory bridges, tunnels, interchanges, feeder roads
2) Rank them by some measure of utility to the economy,
3) identify the deficiencies at the transportation system level -- priority on fixing what is broken then expanding based on economic return
4) prioritize everything
5) Find-out how much money their is available in infrastructure funds for the next 5 years -- independent of the above needs analysis
6) taking the available funds from (5) and the prioritized requirements from (4) -- Write a capital budget with the funding from the Trust Funds and if it can be justified from borrowing
7) Authorize the projects based on the priories and the promise of the work being completed within the 5 year window
8) Then repeat the process ad infinitum
So for example the following would be some local priorities for new construction -- not already underway or obligated (e.g. Assembly Sq., Green Line to Medford):
complete Rt-44 to Interstate standards from I-95 to Rt-3 in Plymouth
highway and rail access to former South Weymouth Naval Air Station
highway access to Worcester Airport
Silver Line tunnel under D Street
some sort of Red-Blue connector or the DTX State to DTX platform connector
I-95 / I-93 Woburn interchange
Fix Haverhill Line track and bridge
Rt-2 to Interstate standards from I-190 to I-495
High Speed electrified right of way Boston to Worcester