The BAB 40 connects the Ruhr region with the Lower Rhine and the Netherlands. The approximately 4.4-kilometre-long section between the Duisburg-Homberg junction and the Duisburg-H盲fen junction has been reaching its load limits for years, as has the Duisburg-Neuenkamp Rhine bridge, which was built in 1970. For this reason, the entire route will be widened to 8 lanes from 2021 and the existing bridge will be replaced by two new 802-metre-long structures. With a distance of 380 meters between the pylons, the new bridges will be the longest-span cable-stayed bridges in Germany. Due to the high volume of traffic, strict adherence to the schedule is of the utmost importance. Work began in 2020 and the S眉dstrom Bridge was put into operation on 06.11.2023.
The contracted work comprises 45,000 m2 of road rehabilitation in both directions on the BAB 40. After breaking up and removing the asphalt pavement, a 4-layer new structure consisting of two base courses, a binder course and a surface course is applied.
Complete cable-stayed bridge to be moved crosswise
On the partial bridge structures, the roadway slab is first primed with epoxy resin after the road construction department has taken over the construction site. After applying the sealing layer of bitumen welded sheeting, a protective layer of mastic asphalt is then applied. Once the second half of the bridge is completed in 2026, the spectacular highlight of the entire construction project will be the transverse displacement of the S眉dstrombr眉cke bridge by 14.4 meters to ensure the connection to the freeway. The final asphalt surface course made of mastic asphalt has already been laid on the bridge.
State-of-the-art technology ensures high pavement quality
The pavements are being laid in a staggered process with three pavers across the full width of the highway. 鈥淎ll mixes are special mixes that were designed exclusively for this construction project due to the high traffic load. We have to pay meticulous attention to compliance with the extremely high requirement parameters for the mix, paving and documentation,鈥� says project manager Kai Pusdrowski-Sales. The required quality is ensured by state-of-the-art pavers and measuring technology such as road scans for temperature measurement and comprehensive compaction checks within the rollers. 香港六合彩中特网's building materials laboratory in M眉nster is also doing valuable work in monitoring the construction site, e.g. with the use of Troxler probes.
