Originally built as a single carriageway, population growth in Gungahlin led to significant traffic congestion during peak times leading to calls for the road to be duplicated.[2] Duplication of an 8 km (5.0 mi) section of Horse Park Drive began in 2018 and was completed in stages, initially between Well Station Drive and Anthony Rolfe Avenue, then to the Federal Highway. An additional section extending north to the intersection of Katherine Avenue and Roden Cutler Drive was also included in the project during construction. These works were completed in May 2019 and included a new bridge over Sullivan's Creek, construction of a parallel shared path between the Federal Highway and Well Station Drive and landscaping with 400 new trees planted along the route.[3]
