Three-way bridge

A three-way bridge (or tri-bridge) is a bridge with three distinct and separate spans, where one end of each span meets at a common point near the centre of the bridge. Unlike other bridges which have two entry-exit points, three-way bridges have three entry-exit points. For this reason, three-way bridges are not to be confused with commonly found road bridges which carry vehicles in one direction from one entry point, and then bifurcate into two other one-way bridges.

Three-way bridges are located throughout the world, though they are rare. Some are as small as a footbridge, while others are multi-lane roadways.

Three-way bridges are often referred to as "T-bridges" or "Y-bridges", due to their shape when viewed from above. Three cities in Michigan each have a three-way bridge named "The Tridge", combining "tri" and "bridge".

The unique shape of a three-way bridge makes it easy to identify from an airplane. Amelia Earhart described Zanesville, Ohio as "the most recognizable city in the country" because of its Y-shaped bridge, and the pilots of Enola Gay aimed for Hiroshima's T-shaped Aioi Bridge when they dropped the atom bomb.

Locations and features

Bridge name	Location	Coordinates	Description	Image
Aioi Bridge	Hiroshima, Japan		Vehicle and pedestrian T-bridge.
Bergues Bridge (Pont des Bergues)	Geneva, Switzerland		Pedestrian Y-bridge over the Rhône.
BlueCross BlueShield of Tennessee building footbridge	Chattanooga, Tennessee, United States		T-shaped footbridge.
Bridge With 3 Branches (Le pont à 3 branches)	Pont-de-Veyle, France		Pedestrian Y-bridge over the Veyle.
Bridge With Three Entrances (Ponte das Três Entradas)	Oliveira do Hospital Municipality, Portugal		Vehicle and pedestrian Y-bridge.
Butterfly Bridge	Copenhagen, Denmark		Pedestrian Y-bridge. Two of the bridge spans may open for passing sailboats. When both spans open at the same time the bridge resembles a butterfly.
Calatrava Bridge	Petah Tikva, Israel		Y-shaped footbridge designed by Santiago Calatrava.
Camp Evergreen Girl Scouts Camp bridge	Cowlitz County, Washington, United States		Pedestrian Y-bridge over Mill Creek.
Chu Y Bridge	Ho Chi Minh City, Vietnam		Vehicle and pedestrian Y-bridge built in 1937.
Colin Glen Forest Park Tri-Bridge	Dunmurry, Northern Ireland		Y-shaped footbridge.
Eco-Viikki Three Way Bridge	Helsinki, Finland		Pedestrian Y-bridge.
Fogelsangh State Three Way Bridge	Veenklooster, Netherlands		Pedestrian Y-bridge.
Galena Y-Bridge	Galena, Missouri, United States		Y-shaped bridge historically used for vehicle traffic, now a footbridge.
Jasenovac Tri-Bridge	Between Jasenovac, Sisak-Moslavina County, Slavonia and Uštica, Bosnia and Herzegovina		Vehicle and pedestrian Y-bridge originally built in 1973, destroyed in 1991, then re-built in 2005.
Kang Ding Tri-Bridge	Kang Ding Xian, Garzê Tibetan Autonomous Prefecture, China		Pedestrian Y-bridge.
Kikko Bridge	Aoyamakogen Country Club, Mie Prefecture, Japan		Y-shaped footbridge built in 1991.
Lune Millennium Bridge	Lancaster, Lancashire, England		Y-shaped footbridge.
Louisa/Fort Gay Tri-Bridge	Between Fort Gay, West Virginia and Louisa, Kentucky, United States		Vehicle and pedestrian T-bridge opened in 1906.
Madrid Rio Y Bridge	Madrid, Spain		Y-shaped footbridge over Manzanares River.
Malvina Footbridge	Malvina, Mississippi, United States		Wooden vehicle and pedestrian T-bridge built in the late 1920s, and demolished in 1972.
Mangakahia Twin Bridges	Nukutawhiti, New Zealand		Vehicle and pedestrian T-bridge over Mangakahia River.
Margaret Bridge	Budapest, Hungary		Vehicle and pedestrian Y-bridge.
Noabers Badde, also called Mercedesbrug	Veelerveen, Netherlands		Pedestrian Y-bridge built in 1989 at the convergence of the Mussel, Diamonds, and During canals.
Overseas Highway	Pigeon Key, Florida,United States		Partially abandoned vehicle and pedestrian T-bridge.
Pierre Corneille Bridge (Pont Pierre-Corneille)	Rouen, France		Vehicle and pedestrian T-bridge over the Seine.
Raehills Three-Way Footbridge	Lockerbie, Scotland		Y-shaped footbridge built in the late 1800s.
Sancha Zijin Bridge/Hama Bridge	Xingtai, Hebei, China		Vehicle and pedestrian stone Y-bridge built in 1691.
Staniastate footbridge	Staniastate, Oentsjerk, Netherlands		Y-shaped footbridge.
Strömsborgsbron	Gamla stan, Sweden		Vehicle and pedestrian T-bridge.
Thetford Footbridge	Thetford, England		Y-shaped footbridge.
Three-Way Bridge	Lyons Falls, New York, United States		Vehicle and pedestrian wooden T-bridge opened in 1849, replaced with steel in 1916, and demolished in 1965.
Treponti	Comacchio, Italy		Five-way stone footbridge at the intersection of five canals, built in 1634.
The Tridge (Brighton)	Brighton, Michigan, United States		Y-shaped footbridge.
The Tridge (Midland)	Midland, Michigan, United States		Y-shaped footbridge.
The Tridge (Ypsilanti)	Ypsilanti, Michigan, United States		Y-shaped footbridge.
Trinity Bridge (Crowland)	Crowland, Lincolnshire, England		Y-shaped stone footbridge.
Trinity Bridge (Greater Manchester)	Greater Manchester, England		Y-shaped footbridge over River Irwell, designed by Santiago Calatrava.
Vijversburg Estate Tri-Bridge	Tytsjerk, Netherlands		Y-shaped footbridge.
Vines Mansion Bridge	Loganville, Georgia, United States		Y-shaped footbridge.
Ypsilon Bridge	Drammen, Norway		Y-shaped footbridge.
Zanesville Y-Bridge	Zanesville, Ohio, United States		Vehicle and pedestrian Y-bridge.