Looking For Roadworks/construction APIs Or Open Data Sources For Cycling Route Planning App

Hey everyone!

I’m building an open-source web app that analyzes cycling routes from GPX files and identifies roadworks/construction zones along the path. The goal is to help cyclists avoid unexpected road closures and get suggested detours for a smoother ride.

Currently, I have integrated APIs for: – Belgium: GIPOD (Flanders region) – Netherlands: NDW (National road network) – France: Bison Futé + Paris OpenData – UK: StreetManager

I’m looking for similar APIs or open data sources for other countries/regions, particularly: – Germany, Austria, Switzerland (popular cycling destinations) – Spain, Portugal, Italy – Denmark, Sweden, Norway – Any other countries with cycling-friendly open data

What I need: – APIs that provide roadworks/construction data with geographic coordinates – Preferably with date ranges (start/end dates for construction) – Polygon/boundary data is ideal, but point data works too – Free/open access (this is a non-commercial project)

Secondary option: I’m also considering OpenStreetMap (OSM) as a supplementary data source using the Overpass API to query highway=construction and temporary:access tags, but OSM has limitations for real-time roadworks (updates can be slow, community-dependent, and OSM recommends only tagging construction lasting 6+ months). So while OSM could help fill gaps, government/official APIs are still preferred for accurate, up-to-date roadworks data.

Any leads on government open data portals, transportation department APIs, or even unofficial data sources would be hugely appreciated! 🚴‍♂️

Thanks in advance!

Edit: Also interested in any APIs for bike lane closures, temporary cycling restrictions, or cycling-specific infrastructure updates if anyone knows of such sources!