By Ashley Halsey III, The Washington Post.

Congress ended weeks of contentious negotiation Tuesday, agreeing to a five-year transportation bill that will boost spending on roads and transit systems by billions of dollars each year.

In its first year, the approximately $300 billion bill increases spending on highways by $2.1 billion above current levels. By the final year, in 2020, the bump will be $6.1 billion above the approximately $50 billion that has been spent in recent years.

Spending on transit will go from the current $8.6 billion to almost $10.6 billion in 2020.