Sustainability Statistics


  • The project restores nearly eight miles of Oklahoma City’s Central Business District streetscape tying into the city’s existing context, accommodating floodplain functions, and conserving habitat for species.  
  • Creates a streetscape that is unique to Oklahoma City’s local context, while allowing for future flexibility and growth.


  • Planting covers 191,465 square feet.
  • The project features 2,500 new street trees, including shantung maple, Kentucky coffee tree, Chinese pistache, yarwood London plane, shumard red oak, escarpment live oak, frio river bald cypress, cedar elm, and bosque elm.
  • Understory planting is based upon the 12 ecosystems of Oklahoma.
  • The project incorporates a native planting strategy.
  • No annual planting offers minimal maintenance and longevity.
  • Medians are switched from paint and concrete to planted material.


  • Trees have the potential for intercepting 1,250,000 gallons of water which are equivalent to the water usage for 1,250 American residents for one day.*
  • Irrigation ties into the existing central control system used by Oklahoma City Parks Department. A weather station, quick couplers and low-water-use spray, bubblers, and drip technologies allow for minimal water usage.
  • Silva Cell paving systems provide on-site stormwater management through absorption, evapotranspiration and interception.

Carbon, Energy + Air

  • Concrete, pavers, and sandstone were all locally sourced.
  • The trees sequester 300,000 pounds of carbon annually, which offset 36 cars per year.**
  • The trees create a continuous canopy for shading, temperature reduction, and energy savings.


  • The improved streetscapes have made downtown Oklahoma City a hub of activity and entertainment, having more festivals and events each year.


  • Creates an accessible environment with equal emphasis for automobiles, pedestrians and bicycles.
  • 102 benches were installed.
  • 50 waste/recycling receptacles are accessible to the public.
  • 44 bike racks and three bike rental stations are available.
  • The project includes 500 street lights.
  • 1600 “green” street parking spaces doubled the amount of parking downtown.
  • Bike lanes between on-street parking spaces and vehicular traffic lanes were introduced.
  • Destination markers are made out of custom castings to allow for wayfinding and an educational display of the historic context.
* The tree average for water interception is 500 gallons. American’s use an average of 100 gallons of water per day (EPA’s water trivia facts)
**120 pounds of CO2 per tree annually (This number is based on an average from the National Tree Benefits Calculator) One car produces an average of 8,320 pounds of CO2 per year. (The Code of Federal Regulations - 40 CFR 600.113)
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape
Project 180 Streetscape

Project 180 Streetscape Sustainability Statistics Project 180 Streetscape