Service at these levels of production and utilization will eventually require the construction of about 379,900 miles of new roads and 6,000 miles of new trails, along with the reconstruction to higher standards of about 105,000 miles of roads and 10,500 miles of trails.

About 26,500 miles of existing trails will be replaced in service by the construction of new roads.

Complete the construction and reconstruction of about 79,400 miles of multiple-purpose roads and 8,000 miles of trails.

The government sponsored the construction of aqueducts and roads in addition to preexisting installations.

The river is still used for transportation of farming produce ; however, it is not as important as it once was due to the construction of roads and railways.

Rail companies accused the government of favouring road haulage through the subsidised construction of roads.

When construction of roads and bridges in Liberia and Sierra Leone is complete, the highway will link to another seven Economic Community of West African States ( ECOWAS ) nations to the west and north-west.

In the early 20th century roads and highways maintenance and construction regulations were established.

The Ministry also created the National Institute of Transit ( from the Spanish Instituto Nacional de Tránsito ), ( INTRA ) under the Transport and tariffs Directorate and was in charge of designing the first National roads plan with the support of many foreign multinational construction companies.

Enclosure was aided by the greatly enhanced access provided by the construction of the first turnpike roads over the moor: the road between Ashburton and Two Bridges opened in around 1800, for instance.

Most of the roads and railways are now under construction, and will be completed between 2011 and 2014.

This will involve the upgrading or construction of over 7, 500 km of roads, with the goal of improving the average road density for Ethiopia to 35 km per 1000 km < sup > 2 </ sup >, and reduce the proportion of the country area that is more than 5 km from an all-weather road from 75 % to 70 %.

By 2007, the Falkland Islands had a road network of with a further roads planned for construction link to all occupied mainland settlements by 2013.

Under Bonilla's rule, companies gained exemptions from taxes and permission to construct wharves and roads, as well as permission to improve interior waterways and to obtain charters for new railroad construction.

However the growth of the number of cars increasingly outpaces the construction of new roads, resulting in frequently crippling traffic jams in large parts in major cities especially in Jakarta, which often also happen on highways.

The most weight has been given to connecting the district centres, but the roads within central Lesotho have also been improved, as part of the construction needs of the Lesotho Highlands Water Project.

U. S. subsidized the construction of airports ( Roberts Field ), the Freeport of Monrovia, and roads into the interior of Liberia.

When construction and reconstruction of roads in Liberia is complete, the Trans – West African Coastal Highway will cross the country, connecting it to Freetown ( Sierra Leone ), Abidjan ( Côte d ' Ivoire ), and eventually to 11 other nations of the Economic Community of West African States ( ECOWAS ).

Helped by the construction of Roman roads.

In southern Mexico and Central America it is widely used to clear bush and often hundreds of macheteros are contracted to assist in clearing paths for the construction of new roads or structures.

However, where railways were constructed, roads often either preceded them for construction or quickly followed it when the newly accessible land started to be settled more closely.

Airports, roads, and railway construction will provide a massive employment boost in China over the next decade.

The engineer battalion is used for civic action with construction and reticulation capabilities, while the two infantry battalions also constructs roads, bridges and other infrastructure in regions where commercial companies are unwilling to work for security reasons.

The Arthashastra of Kautilya mentions the construction of dams and bridges.

The construction of dams on the Nile, particularly the Aswan High Dam, transformed the mighty river into a large and predictable irrigation ditch.

He encouraged the Newlands Reclamation Act of 1902 to promote federal construction of dams to irrigate small farms and placed 230 million acres ( 360, 000 mi² or 930, 000 km² ) under federal protection.

The discharge regime of the Euphrates has changed dramatically since the construction of the first dams in the 1970s.

Data on Euphrates discharge collected after 1990 show the impact of the construction of the numerous dams in the Euphrates and of the increased withdrawal of water for irrigation.

While encouraging the construction of large dams ( which Nehru called the " new temples of India "), irrigation works and the generation of hydroelectricity, Nehru also launched India's programme to harness nuclear energy.

Much money has been spent for land amelioration projects involving the installation of drainage pipes, the straightening and deepening of natural streams, the digging of drainage ditches, and the construction of polder dams.

Two large dams ( see below ) are under construction as part of the IIRSA regional integration project.

The construction of dams for hydropower generation is underway or envisaged in order to alleviate chronic power shortages in the countries of the Niger basin.

Groups in both countries have expressed concern over the Peoples Republic of China's construction of 13 hydroelectric dams on the Salween River in Yunnan.

As the construction of dams, power plants and canals required immense labor, which was rare in the middle of the Depression, the government authorized Sacramento River dams and other structures as public works projects beginning in 1935.

These wetlands originally flooded every winter and spring, but levee construction, agricultural encroachment and the construction of dams upstream have also eliminated the flooding process.

The plan as originally conceived called for the construction of five dams that would have had a total generating capacity of 34, 500 megawatts.

He encouraged the Newlands Reclamation Act of 1902 to promote federal construction of dams to irrigate small farms and placed 230 million acres ( 360, 000 mi² or 930, 000 km² ) under federal protection.

It is now documented that the first area they became landlocked was in the Santee-Cooper river during the construction of the two dams that impounded Lake Moultrie and Lake Marion, and because of this the state game fish of South Carolina is the striped bass.

Construction engineering is a professional discipline that deals with the designing, planning, construction, and management of infrastructures such as highways, bridges, airports, railroads, buildings, dams, and utilities.

Intended as permanent structures, steel dams were an ( arguably failed ) experiment to determine if a construction technique could be devised that was cheaper than masonry, concrete or earthworks, but sturdier than timber crib dams.

Timber dams were widely used in the early part of the industrial revolution and in frontier areas due to ease and speed of construction.

Timber plank dams were more elegant structures that employed a variety of construction methods utilizing heavy timbers to support a water retaining arrangement of planks.

Made commonly of wood, concrete or steel sheet piling, cofferdams are used to allow construction on the foundation of permanent dams, bridges, and similar structures.

Several rescue operations have already been undertaken when the construction of dams put entire river valleys under water.