Energy transportation might also need the construction of tunnels, when high voltage electricity cables, oil ducts, gas ducts, etc , are built underground for safety, environmental or functional reasons.
In the case of oil and gas transportation, a lot of traffic can be spared from the main roads and railways, limiting also the risk and dangers associated to the transportation of dangerous and inflammable products.
For instance in the Uk, a large network of underground pipelines transport the petrol and diesel products from the refineries on the coast to the local distribution terminals.
In the US, the first underground pipeline built for carrying oil was laid in Pennsylvania already in 1865. Nowadays, like in most developed countries, a vast number of underground oil and gas pipelines cover the whole country.
Energy transportation might also need the construction of tunnels, when high voltage electricity cables, oil ducts, gas ducts, etc , are built underground for safety, environmental or functional reasons.