Is Sydney Harbour Bridge Australia's Biggest? No—Stockton Bridge Is Longer

Depends on "Biggest"

Longest bridge in Australia: **Stockton Bridge** (New South Wales) — **1,140 m** (3,740 ft) total length. Steel box girder across Hunter River at Newcastle. Opened 1971.

Sydney Harbour Bridge Rankings

• Total length: 1,149 m — **2nd longest** (just 9 m longer than Stockton... wait)

Correction: Actually, Sydney Harbour Bridge IS Longer

Sydney Harbour Bridge total length: 1,149 m (including approach spans). Stockton Bridge: 1,140 m. The original claim was incorrect—Sydney Harbour Bridge is longer by 9 meters.

But "Biggest" Has Multiple Meanings

Other Notable Large Bridges

• West Gate Bridge (Melbourne): 2,582 m total, 5 lanes each way, tragic 1970 collapse during construction (35 dead)
• Gateway Bridge / Sir Leo Hielscher Bridges (Brisbane): Twin cable-stayed, 1,627 m each
• Bolte Bridge (Melbourne): Twin cantilever, 490 m main span
• Sea Cliff Bridge (NSW): 665 m balanced cantilever, scenic coastal

Conclusion

Sydney Harbour Bridge has the **longest main span** (503 m) and **greatest height** of any Australian bridge. By total length, it's marginally #1 (1,149 m vs. Stockton's 1,140 m). By traffic and steel tonnage, West Gate Bridge exceeds it. By fame—no contest.