The U.S. Interstate System faces a persistent and growing backlog of reconstruction needs that funding has failed to keep up with for years, according to a new report.
The report by TRIP, a national transportation research nonprofit, calls for more than doubling the annual federal allotment for the system – from $23 billion in 2018 to $57 billion – over the next 20 years. The report also ranks the states for traffic congestion and travel conditions, a chart of which can be seen at the end of this article.
The report says the system's foundation needs to be rebuilt and more lanes added to handle the congestion that continues to grow. Travel from 2000 to 2019 has jumped 26%, three times the rate of new lane capacity. Almost half of all urban interstate highways are considered congested during peak hours, the report says.
Much of that additional traffic has been due to more tractor trailers on the road. The report says tractor trailer travel has risen 43% from 2000 to 2019 versus 19% for overall vehicle travel.
Repaving has helped the system, but the gains are diminishing as the foundation deteriorates.
TRIP reports that 11% of interstate highway pavements are in poor or mediocre condition. Meanwhile, 3% of interstate bridges are rated in poor condition, and 57% are rated fair.
The TRIP report makes the following recommendations:
- Reconstruct foundations of interstate highways, bridges and interchanges
- Improve safety features
- Right-size the system, including upgrading some corridors to interstate standards
- Add highway capacity on existing routes
- Add corridors
- Modify “some urban segments to maintain connectivity while remediating economic and social disruption.”
“The long-term vision that helped establish the current Interstate Highway System 65 years ago is needed again today,” said Dave Kearby, TRIP’s executive director.
Here is the report’s ranking of states for congestion and other travel conditions on the interstate system: