Bidding Announcement for the Construction of YHDZX-2025-L5 and YHDZX-2025-L6 Sections of the Ordinary National and Provincial Road Surface Maintenance Project (G328 Yangzhou Section, S417 Yangzhou Section) in Yangzhou City in 2025. 1. Bidding Conditions: This bidding project has been approved for construction by the Highway Development Center of the Jiangsu Provincial Department of Transportation under the document Sujiaogongyang [2025] No. 1, and the construction drawing design has been approved by the Highway Development Center of Yangzhou City under the document Yanggaogongyang [2025] No. 5. The project owner is the Yangzhou Highway Development Center, and the construction funds come from special maintenance funds, with a contribution ratio of 100%. The bidder is the Yangzhou Highway Development Center. The sentence is:. The project has met the bidding conditions and is now open for bidding for its construction. 2. Project Overview and Bidding Scope 2.1 Project Overview This bidding is divided into two sections: (1) YHDZX-2025-L5 section: 2025 Yangzhou ordinary national and provincial road surface maintenance project (G328 Yangzhou section, S417 Yangzhou section) G328 Yangzhou section (K290+800~K296+090 section) preventive maintenance project and 2025 maintenance emergency (inspection) project, including: ① 328 National Highway Yangzhou section (up K290+800- K295+500, K295+730- K296+090; down K290+800- K292+765, K292+765- K294+033 (first lane) K294+033—K295+500、K295+730—K296+090）， The total length of the road section is 10.12km, with a lane length of 18.972km. Preventive maintenance plan: For the entire K290+800-K292+765, K294+033-K295+500, and K295+730-K296+090 sections, local disease treatment will be carried out on the original road surface, followed by the addition of 3cm SMA-10 (modified asphalt) overlay; K292+765- K294+033 section (first and second lanes up and first lane down), after local disease treatment of the original road surface, an additional 1cm permeable wear layer is added; After milling and planing the original asphalt surface layer on some sections, the lower layer and base layer are partially repaired, and the factory mixed warm mix recycled SUP-25 asphalt concrete lower layer+4cm SMA-13 (modified asphalt) upper layer is backfilled Emergency Maintenance Project for Ordinary National Highways in Yangzhou City in 2025 (Welcoming National Inspection): The emergency maintenance project for non double excellent sections of ordinary national highways within the scope of Yangzhou City (not limited to Jiangdu area) will be selected for the national highway evaluation inspection in 2025 (generally with a construction period of no more than 7 days, and will not be implemented if not selected). The emergency maintenance and treatment plan is as follows: (1) After treating local diseases on the original road surface, the upper layer is treated with on-site mixing and on-site thermal regeneration treatment plan; (2) After treating local diseases on the original road surface, add a 0.5cm super adhesive wear layer; (3) After treating local diseases on the original road surface, milling and repaving SUP-13 (modified asphalt, basalt)