M-45 Highway Crossing

Construction of subway crossing under the railway line

The project of the subway crossing on the M-45 highway consisted of the construction of a tunnel for the installation of a sewerage collector. The work was carried out with a Hidroshield TBM shield DN2500designed to traverse clay and gypsum soils with maximum precision. This project made it possible to improve the area's sanitation infrastructure without affecting the highway's operation, guaranteeing the stability of the terrain through continuous monitoring of settlements. Thanks to the technology used, safe and efficient excavation was achieved, minimizing the impact on the surface.

General project details

Location: M-45 Highway, Spain
Main objectiveInstallation of a subway collector without affecting the operation of the highway.
Geological conditionsClay and plaster.
Technology usedHydroshield TBM DN2500.
Total tunnel length: 732 meters.

Technical specifications

Nominal diameter: 2,500 mm.
Method usedExcavation with Hidroshield shield and pipe jacking.
Continuous monitoring of settlements to avoid affecting the highway's infrastructure.

Logistics and technical challenges

This project required detailed planning to ensure ground stability and minimize any impact on the roadway.

Project highlights

Controlled excavation under the highwayminimizing structural risks.
Continuous monitoring by means of topographic measurementsensuring the stability of the tunnel.
Use of Hidroshield technology to pass through low cohesion soils without generating surface deformations.

Environmental and social impact

The subway crossing on the M-45 highway made it possible to improve the sewerage network without affecting vehicular traffic.

Reduction of environmental impactby using trenchless excavation methods.
Modern and efficient infrastructureoptimizing wastewater management.
Guaranteed safetywith constant monitoring and stability control in the excavation.

References of executed works

In Eurohinca we are specialists in the execution of tunnels for pipelines with tunnel boring machines. Since its foundation in 1996 Eurohinca has executed different types of works:

International Experience