The John Gorton Drive Bridge over the Molonglo River will be the last section of the John Gorton Drive to be completed in 2025. The information for this bridge profile is from the environmental approval. At the time, in 2019, little information was available. Two sources provide some insight.
Despite the in improvement of wayfinding signage, handlebar mounted navigation is still useful. OpenStreetMap is the best cycling map for Canberra. Here is an introduction of digital maps and GPS navigation.
To navigate Canberra, you will need the right map that is both current and suitable for your type of biking. Mountain biking requires special maps. City cyclists prefer paved surfaces and require good maps that show rideable paths, including bike paths.