“十四五”期间，烟台完成干线公路建设和改造里程1100多公里

Group 1 - During the "14th Five-Year Plan" period, Yantai completed the construction and renovation of over 1,100 kilometers of trunk roads, establishing a solid foundation for the city's transition from a "road city" to a "strong road city" [1] - The total length of trunk roads in Yantai is now 2,494.2 kilometers, including 668 kilometers of expressways and 875.7 kilometers of first-class roads [1] - The expressway network structure has been further optimized, with significant progress made in collaboration with Shandong Highway Group and local governments [1] Group 2 - The G18 Rongwu Expressway's Weihai to Yanhai section was opened in 2023, marking the first six-lane expressway in Yantai [1] - The G18 Rongwu Expressway's Yantai Hub to Penglai Hub section, featuring a two-way eight-lane design, was opened in June 2023, with full completion expected by 2026 [1] - A total of 85 projects for ordinary national and provincial roads have been completed, enhancing the quality of these roads [2]