Isn building wooden bridges harmful to the environment?
No. The primary material in timber bridge construction is Southern Yellow Pine or Douglas Fir. Wood is the only sustainable and renewable building material – it is a renewable resource unlike steel, concrete, or plastic. North America has more acreage of trees than it did even 70 years ago, due to responsible forestry practices. In addition, according to the Southern Pine Council, “Wood contributes far fewer greenhouse gas emissions than its non-renewable counterparts, steel and concrete. Although wood products make up 47% of all raw materials made in the United States, its share of energy consumption during production is only 4% of all manufactured materials.
