Cambridge’s Mathematical Bridge: 18th-century Architectural Marvel
Located at the Queen’s College of the University of Cambridge, the magnificent Mathematical Bridge got its name, because of the unique geometrical design. Even though it consists of completely straight timbers, they are arranged in such a way that makes the bridge curved.
The unique structure has inspired all sorts of lore, that has circulated across campus. Some say it was constructed by Isaac Newton himself, while proving certain laws of physics. Another theory is that the bridge was constructed completely of wood, without the use of nails or other materials. It was proved to be true, when students (or in some versions of the tale, academicians) deconstructed the bridge and failed to put it back together.
The bridge was built by James Essex and designed by William Etheridge. The bridge also has nails and bolts in it. When it was first constructed, there were iron spikes driven into the joints that gave the illusion that it was constructed out of nothing but wood.
The reason for its curved structure at the bottom, is to ensure that the bridge would not be destroyed, if a common flood were to happen. It was constructed by arranging the pieces of straight timber in specific angles and pressure, to allow the perfect curve to occur.
You’ll be able to visit the bridge yourself (and see if there are any nails or bolts yourself) by paying a fee of 3.50 pounds and entering through the Visitor’s Entrance on Queen’s Lane. From there, you’ll be able to cross the bridge and see the famous sundial. You can also opt for a punting tour that will allow you to explore under the bridge.
UnusualPlaces Field Notes
- Location
- Mathematical Bridge (Queens’ Bridge), Queens’ College, Cambridge, England
- Coordinates
- 52.20221, 0.11505
- Access
- The bridge is inside Queens’ College. College visitors enter via the Visitors’ Gate on Queens’ Lane; ordinary self-guided entry is limited to groups of up to six, while groups of six or more must book a Cambridge Blue Badge Guide. The college’s accessibility guide says the bridge ramps are steep (1-in-5); powered wheelchairs can manage them, while unpowered wheelchairs may need assistance. For a free view without entering the college, see it from Silver Street Bridge.
- Admission
- There is no separate bridge ticket. Viewing from Silver Street Bridge is free; to enter Queens’ College and cross the Mathematical Bridge, the college currently charges £5 per visitor. Children under 12 accompanied by an adult enter free; other listed exemptions apply. Check the college visitor page before going.
- Time needed
- Queens’ College does not publish a standard duration for a self-guided visit. Allow about 15–30 minutes as a planning estimate to enter, view and cross the bridge, then return through the college grounds. The College lists 30–45 minutes for a separate guided tour at its 2026 postgraduate open day; that is not a regular bridge-visit duration.
- Best season
- Queens’ College publishes no preferred season for the bridge. It welcomes visitors through much of the year, but closes during examination periods, some ceremonial dates and Christmas; check its current closure calendar and choose a dry day for the steep bridge ramps.
- Opening hours
- Queens’ College visitor hours are 10:00–16:00. The College closes on listed dates, including 23 December 2026–3 January 2027 and the 2027 examination period (19 April–1 July); check its official calendar before visiting. These are college-entry hours, not a separate bridge schedule.
- Location checked
- 2026-10-14
- Facts checked
- 2026-10-28
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