Bill would provide $343 billion for highways, bridges and highway safety.

The legislation, which Republicans sharply criticized, is slated for a June 9 committee vote.

Rare example of bipartisan legislation includes about $8.6 billion in federal funds for 34 new Corps projects.

After lengthy markup, package, drafted by Democrats, heads toward a floor vote, maybe by July 1.

Proposal unveiled by DeFazio is silent on how to pay for the $138-billion trust-fund infusion needed to fully fund it.