The Beijing–Taipei Expressway is a partially completed expressway

Expressways of China

The Expressway Network of the People's Republic of China is one of the longest in the world. The network is also known as National Trunk Highway System . The total length of China's expressways was at the end of 2010, the world's second longest only after the United States and slightly longer...

 that, if completed, would connect Mainland China

Mainland China

Mainland China, the Chinese mainland or simply the mainland, is a geopolitical term that refers to the area under the jurisdiction of the People's Republic of China . According to the Taipei-based Mainland Affairs Council, the term excludes the PRC Special Administrative Regions of Hong Kong and...

 with the city of Taipei

Taipei

Taipei City is the capital of the Republic of China and the central city of the largest metropolitan area of Taiwan. Situated at the northern tip of the island, Taipei is located on the Tamsui River, and is about 25 km southwest of Keelung, its port on the Pacific Ocean...

, Taiwan

Taiwan

Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

. Currently, the expressway is complete from Beijing

Beijing

Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

 to Fuzhou

Fuzhou

Fuzhou is the capital and one of the largest cities in Fujian Province, People's Republic of China. Along with the many counties of Ningde, those of Fuzhou are considered to constitute the Mindong linguistic and cultural area....

, Fujian

Fujian

' , formerly romanised as Fukien or Huguing or Foukien, is a province on the southeast coast of mainland China. Fujian is bordered by Zhejiang to the north, Jiangxi to the west, and Guangdong to the south. Taiwan lies to the east, across the Taiwan Strait...

, except for a small section in Fujian which is under construction.

The project has been the source of some controversy because of Taiwan's political status

Political status of Taiwan

The controversy regarding the political status of Taiwan hinges on whether Taiwan, Penghu, Kinmen, and Matsu should remain effectively independent as territory of the Republic of China , become unified with the territories now governed by the People's Republic of China , or formally declare...

. The People's Republic of China

People's Republic of China

China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

 claims Taiwan

Taiwan

Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

, but does not currently administer it, so therefore does not have any control of its highways. Aside from politics, the other challenge is the engineering difficulties in constructing the link through the Taiwan Strait

Taiwan Strait

The Taiwan Strait or Formosa Strait, formerly known as the Black Ditch, is a 180-km-wide strait separating Mainland China and Taiwan. The strait is part of the South China Sea and connects to East China Sea to the northeast...

. A bridge seems less likely than an undersea tunnel, which would have to exceed 100 kilometers in length. This is further complicated given the climatic and weather conditions across the straits.

In Mainland China, it it connects the cities of Beijing

Beijing

Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

, Tianjin

Tianjin

' is a metropolis in northern China and one of the five national central cities of the People's Republic of China. It is governed as a direct-controlled municipality, one of four such designations, and is, thus, under direct administration of the central government...

, Jinan

Jinan

Jinan is the capital of Shandong province in Eastern China. The area of present-day Jinan has played an important role in the history of the region from the earliest beginnings of civilisation and has evolved into a major national administrative, economic, and transportation hub...

, Tai'an

Tai'an

Tai'an is a prefecture-level city in western Shandong province, People's Republic of China.Centered around Mount Tai, the city borders the provincial capital of Jinan to the north, Laiwu to the northeast, Zibo to the east, Linyi to the southeast, Liaocheng to the extreme west and Jining to the south...

, Hefei

Hefei

Hefei is the capital and largest city of Anhui Province in Eastern China. A prefecture-level city, it is the political, economic, and cultural centre of Anhui...

, and Fuzhou

Fuzhou

Fuzhou is the capital and one of the largest cities in Fujian Province, People's Republic of China. Along with the many counties of Ningde, those of Fuzhou are considered to constitute the Mindong linguistic and cultural area....

.