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.
The ACT Government hailed the Butters Bridge as “a new cycling bridge in the Molonglo Valley” (Our Canberra, December 2016). Unfortunately, ACT Environment would prefer that cyclists avoid it.
The Molonglo River Reserve protection makes the development of the Molonglo Valley future urban area difficult. Here is a summary of the Molonglo River Reserve Management Plan from the perspective of cycling.
Would the 20-minute neighbourhoods work for the ACT? They could. We calculated with OpenRouteService for each town and group centre, the area no more than 20 minute distant for a normal cyclist. The green colour is 10 min and red shows the 20-minute distance. Most of the city is covered.
Good active travel infrastructure in the ACT requires some understanding of urban planning. The ACT Government provides many documents that are very detailed, and often highly technical, so that it is easy to become overwhelmed. A simple explanation of urban planning in Canberra is a good start.
One of the big factors that make a bike path rideable is the gradient of the path. Too steep and we will find ourselves pushing uphill. Bike paths, poorly designed, are too steep to ride. A case study of Whitlam active travel network
A case study of Denman Prospect and Whitlam – two suburbs in the Molonglo Valley, south and north of the Molonglo River – that are of particular interest to active travel in the Monlonglo Valley.
Several materials are used to build paths in Canberra. Preliminary estimates from ACT budget data showed that it was possible to build 30 km of bike paths for every single kilometre of dual-lane carriageway. This is an argument to spend more on paths but does not answer the question of the cost of path types.
The Australian Austroads cycle path standards includes recommendations on path widths. The recommended path widths are wider than the vast majority of community and shared paths in Canberra. The Austroads AGRD06A standard is more detailed than the ACT equivalent and complements the local standard.
The Butters Bridge won the Master Builders Association 2016 Award in the National Civil / Infrastructure category. Cost $7.7m, length 242 m, 25 m above the Molonglo River, and one of ACT`s tallest and longest bridges.