Recently, CRBC completed the pilot tunnel of the Kozjak tunnel, a key section of the new connection between Split and the A1 highway in Vučevica, Croatia. This marks a major milestone for the project and creates favorable conditions for the construction of the main tunnel and the accelerated advancement of the entire line.

Located in northern Split, the new connection between Split and the A1 highway serves as a key regional transport link connecting the existing DC8 road with the A1 highway interchange. The Kozjak tunnel passes through the Kozjak mountain range. Its main tunnel is 2,525 meters long with two-way, two-lane traffic, while the pilot tunnel extends 2,529 meters as a single-lane passage. During construction, the pilot tunnel supports ventilation, transportation, drainage, and advanced geological exploration, and after completion, it will serve as an emergency rescue passage.

Meanwhile, the main tower of the Xinzhou grand bridge on the South section of the Shiyan–Wuxi Expressway was successfully topped out.This major transport artery connects Hubei and Shaanxi provinces, with a total length of 84.9 kilometers. The bridge is a key control project along the route, stretching 569 meters with a main span of 340 meters. Its 201.5-meter main tower makes it the world's largest single-tower partially earth-anchored cable-stayed bridge by span. Once completed, the project will further strengthen regional connectivity and coordinated development.