Eike Send developed routing support for under-construction roads in the valhalla/valhalla repository by introducing an ignore_construction flag to the routing engine. This feature required updates to API documentation, protocol buffer definitions, and dynamic costing logic, enabling the system to plan routes that include roads marked as under construction. Eike’s work focused on backend development and API design, leveraging C++ and Protocol Buffers to implement the new routing behavior. By allowing more flexible route planning during construction activities, this change reduced the need for manual intervention and improved route availability, demonstrating a thoughtful approach to solving real-world routing challenges.