Dennis Bridge, Steel truss road bridge near Port Macquarie, Australia

Dennis Bridge is a steel truss road bridge that crosses the Hastings River near Port Macquarie in New South Wales. The structure comprises six large truss spans, one smaller span, and ten steel plate girder approaches that together span about 468 meters.

The Department of Main Roads constructed this crossing in December 1961 to replace the Blackmans Point ferry service. The bridge provided a way around Port Macquarie and significantly improved regional connectivity.

The bridge is named after Spencer Dennis, an engineer at the Department of Main Roads. It belongs to a series of standardised steel truss bridges the department built in the 1950s and 1960s, mostly across the wide coastal rivers of New South Wales.

The crossing maintains two traffic lanes and a footway that is accessible from both sides. It connects Hastings River Drive to the Pacific Highway and serves as the northern approach to Port Macquarie.

Three of the truss spans form a continuous structure with a central section originally designed for conversion to a lift span that never happened. This feature reveals how the engineers planned for future modifications without ever needing to implement them.