Sheehy Mail Contractors

Sheehy Mail Contractors

Location: Waterloo, WI

About: Sheehy Mail Contractors, Inc. has been in business since 1952. SMCI is a family owned and operated trucking company that developed to haul U.S. Mail contracted to the United States Postal Service. SMCI has hauled the mail for 63 years, during that time Sheehy also began working with many commercial shippers as well. Today the US Mail contracts comprise approximately 50% of our service business. Sheehy has always been innovative; in the 1960 Gerald Sheehy experimented with rolled van body corners and smaller gas engines in order to conserve fuel. In the 1990 Sheehy was a leader in on board computer systems outfitting every truck with EOBC’s along with electronic HOS compliance. Aerodynamics and low resistant tires as well as wide track tires have all been tested or implemented at Sheehy in its history. In 2012 Sheehy began testing the feasibility of using CNG for some of its mail contracts and focused on shorter haul predictable service routes. This provided Sheehy the platform to learn how CNG can be used, what the tank sizes needed to be and how the vehicles would perform under loads. Sheehy expanded in 2014 to using CNG on most of its longer haul operations and now has 75% of its 100 truck fleet using CNG. These trucks travel all over the country from Wisconsin to as far away as New Jersey, Phoenix and Atlanta. The technology that Sheehy uses has had positive cost containment effect for the operations as well as cleaner air. Sheehy is proud of our long “Green” initiatives, and plans to continue to lead the industry.

Sheehy Mail Contractors, Inc, continues to work toward 100% of its on-road fleet to be powered by CNG fuel.  Sheehy operates 97 class 8 vehicles 76 of these are Powered by CNG.  Sheehy is currently operating on 83% alternative fuels. The driver acceptance and scope of our project is very positive.  Sheehy operates these alternative energy vehicles all over the United States.  With the addition of fueling locations by Kwik Trip, Gain, Trillium and others Sheehy has established a nationwide network of routes capable of operating on clean burning CNG.  Sheehy feels good about our progress and is excited to be part of emission reduction programs, and to be living proof that it is possible to greatly reduce the carbon footprint of a trucking company.

Internal Incentives:

  • Green Purchase Policy

Best Practices:

  • GPS Tracking
  • Route Optimization
  • Idle Reduction Training
  • Eco-Driving Training


  • Continue to expand CNG fleet

Fleet Overview:

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