Guangzhou-Huadu Class I Highway PPP Project is one of the national pilot projects of utility tunnel pilot cities in 2016. It includes the utility tunnel and the road speedup upgrading. Lot 3 involves 80.8 meters of prefabricated three-compartment utility tunnel with a 10.2 m × 4.6 m cross-section, which is composed of 2.4 m long segments and includes an upper part and a lower part.
Lot 4 involves the utility tunnel and the comprehensive municipal works of road speedup upgrading. The total length is 3.2 km, including 93.6 m of prefabricated section. The prefabricated section is composed of 2.4 m long standard segments and includes split upper part and lower part. The upper end face is 10.2 m wide and 2.35 m high, and the lower end face is 10.2 m wide and 2.25 m high.