If you've been reading this blog for a while, you've probably read the Nicollet Island Coalition 2010 report
Big Price – Little Benefit: Proposed Locks on the Upper Mississippi and Illinois Rivers Are Not Economically Viable.
In Big Price, the Coalition tackles claims by the Corps of Engineers
and navigation industry that expensive new locks on the Mississippi and
Illinois Rivers are justified because inland towing is “the most fuel
efficient mode of transportation” based on the following data[1]:
In the 2010 report section “Superior Barge Fuel Efficiency Claims are
Questionable,” the Coalition discusses 1. How navigation industry
conveniently uses inappropriate railroad fuel efficiency data and 2. How
circuity reduces the fuel efficiency of navigation. To recap what the
Coalition said in 2010:
- Railroad fuel efficiency
The railroad figure above is actually the average from all railroads
and does not accurately represent the railroads in direct competition
with inland towing. Unit trains carry bulk commodities long distances
and compete with navigation for export traffic. Unit train fuel
efficiency is 640 ton-miles per gallon – significantly higher than
inland towing.
- Circuity
Inland navigation is confined to rivers, which are squiggly. Both
road and rail can increase their fuel economy by constructing direct
routes. The Universities of Illinois[2] and Iowa[3] evaluated how much
further barges have to travel to export goods from the Midwest to New
Orleans and found that on average, barges travel 1.3 to 1.38 times
further than rail.
Adjusted fuel economy data[4]:
Take the above realities into account and you see that navigation is
not the most fuel efficient mode of transportation. Since the report was
published in 2010, I've found two additional studies to bolster the
Coalition’s criticism of navigation fuel economy claims.
The university studies referenced in the 2010 report did not evaluate
truck fuel efficiency because trucks do not carry a significant portion
of bulk commodities over long distances like trains and barges. But a
recent study published by the Maritime Administration[5] does look at
carbon emissions between trucks and barges for a hypothetical
container-on-barge route between Peoria, IL and New Orleans, LA. They
found that, due to circuity, inland towing would emit 23,906 metric tons
of carbon dioxide annually. While trucks, carrying the same load to and
from the same port, would only emit 13,739 metric tons of carbon
dioxide annually.
But, circuity is hard to generalize. This is why the Coalition has
been searching for river segment specific fuel efficiency data. Rivers
are like roads – your car’s fuel efficiency is better on the interstate
than in town. Locked rivers are like driving in town – all the stop and
go decreases fuel efficiency. To get regional inland towing fuel
efficiency data, I started trying to calculate it from the regional fuel
tax revenues provided in a recent National Academy of Sciences
report[6] (I know the fuel tax is $0.20 per gallon and I know the
ton-miles carried on each river segment). But the revenues were provided
as a graph, so I didn’t have accurate figures for a calculation. Like a
good academic, I followed the citations in hopes of finding the
regional fuel tax receipts. What I found instead: The Tennessee Valley
Authority[7] already did this calculation!
The fuel efficiency for the Mississippi River according to the TVA:
275.8 ton-miles per gallon on the locked portion of the Mississippi
River! That means the navigation industry has a fuel efficiency error of
more than 300 ton-miles per gallon! Holy crap! Just this month, Hyundai
and Kia agreed to pay a $360 million settlement because they sold cars
with posted average fuel economy 1 to 6 miles per gallon above the
actual fuel efficiency. Meanwhile, taxpayers are forking over about $700
million annually to maintain navigation infrastructure – and most of
that money goes to locks and dams where towing is the least efficient.
If anyone from the Corps is reading this now, I hope you’re doing a
face-palm. It’s time to rethink our water resource investments.
[1] Texas Transportation Institute – Center for Ports &
Waterways, December 2007 (amended March 2009), “A Model Comparison of
Domestic Fright Transportation Effects on the General Public Final
Report,” prepared for the U.S. Maritime Administration and the National
Waterways Foundation.
[2] Anthony V. Sebald, 1974, “Energy Intensity of Barge and Rail Freight Hauling,” CAC Document No.27, University of Illinois.
[3] Baumel, C. Philip, Charles R. Huburgh, and Tenpau Lee, 2008,
“Estimates for Total Fuel Consumption in Transporting Grain from Iowa to
Mayor Crain Countries by Alternative Modes and Routes,” Iowa State
University.
[4] Circuity figures are based on the 576 ton-miles per gallon provided by the industry.
[5] U.S. Maritime Administration, 2013, “America’s Marine Highway Program Draft Programmatic Environmental Impact Statement.”
[6] Committee on U.S. Army Corps of Engineers Water Resources
Science, Engineering, and Planning; Water Science and Technology Board;
Division on Earth and Life Studies; National Research Council, 2012,
“Corps of Engineers Water Resources Infrastructure: Deterioration,
Investment, or Divestment?”
[7] Bray, Larry G., et al. July-August 2002, “River Efficiencies,
Fuel Taxes, and Modal Shifts: Tennessee Valley Authority Model Assists
Policy Makers.” TR News issue 22.