The project started in 1998, lasted 3 years and finished in June 2001.
The Fourth Ring Road is the urban expressway. The total length is 63.5 kilometers. The major road is enclosed and all the crosses are facilitated by overpasses.
The Fifth Ring Road rounds along the verge of Beijing city, 10-15 kilometers from downtown. It is a ring road expressway between downtown Beijing and its outskirts. The Road connects with 8 highways from the capital.
