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CNG Fueling Station Design and Construction Management

New CNG Station reduces operating costs and advances Going Green initiative.
  • Fast-fill CNG fueling station with four fueling lanes - Gannett Fleming

    Central Ohio Transit Authority's new fast-fill CNG fueling station includes an exterior fueling dispenser on each of four fueling lanes.

  • New COTA CNG facility - Gannett Fleming

    Central Ohio Transit Authority’s new CNG facility has 12 CNG storage vessels with total capacity of 140,000 standard cubic feet of natural gas at 4500 psi.

  • CNG fueling facility grand opening - Gannett Fleming

    Central Ohio Transit Authority's CNG Fueling Facility's grand opening on May 16, 2013.

Central Ohio Transit Authority

Richard L. Bowen and Associates, Inc.

Columbus, Ohio

Our Role
Design- and Construction-Phase Services.

400,000 square feet
Construction Cost
$6 million
2 years
  • Renovated facility can now accommodate future expansion of CNG bus fleet
  • The new fueling station will reduce bus operation costs
  • Advancement of Going Green initiative.

Central Ohio Transit Authority (COTA) made the decision to renovate its 400,000-square-foot McKinley Avenue Bus Facility and offices and to investigate ways to reduce operating expenses. This prompted COTA to purchase CNG-powered buses to replace the diesel-engine buses and to add a new CNG fueling station and CNG facilities building in the renovations. 

COTA hoped to reduce fuel costs for the bus operation and make the fleet more in line with its “Going Green” program. COTA anticipates that fuel costs for the CNG buses will be two-thirds less than diesel. With plans already underway to renovate its McKinley Avenue bus garage and office, the timing was perfect to adapt the 400,000-square-foot facility for CNG.

What We Did

Gannett Fleming prepared bidding documents for alterations and additions to COTA’s 30-year-old McKinley Avenue Bus Facility. Tasks involved design- and construction-phase services for the CNG compressing plant and fueling islands, structural elements of facilities and building modifications, and site improvements.

Our site design included an upgrading the exterior bus travel lanes, providing access to the four CNG fueling lanes, and realigning the bus lanes with the new entrances to the existing garage. In addition, we provided structural design support for the replacement of sixteen 12-foot-high overhead doors with 14-foot-high doors; two new building entrances; a new heating, ventilation, and air-conditioning (HVAC) system; alterations and additions in the bus facility maintenance areas and mezzanine; and a new support building adjacent to the CNG fueling lanes.

Key Features

  • The facility accommodates 90 full-size CNG transit buses with the capacity to fuel up to 180 CNG buses in the future
  • The new CNG compressing plant includes gas dryers, compressors, buffer storage, fueling dispensers, controls, and a defueling system
  • Our fast-track design- and construction-phase services readied the facility for the arrival of the first CNG buses a month before the grand opening.

Sustainability Features & Outcomes

  • Reduced greenhouse gas emissions by switching from petroleum to CNG fuel
  • Advanced COTA's Going Green program.

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