Frog Bridge

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Frog Bridge
Frog Bridge in Windham, Connecticut LCCN2012630529.tif
One of the four copper frogs on the bridge
Coordinates41°42′36″N 72°12′34″W / 41.71°N 72.2094°W / 41.71; -72.2094
CarriesSouth St. (CT 661)
CrossesWillimantic River and New England Central Railroad
Official nameThread City Crossing
Named forNamed after the city's history with thread mills
OwnerConnecticut Department of Transportation
Preceded byAn 1857 stone arch bridge, currently a garden bridge (CT 601)
DesignSimple Compression Arch Bridge
Total length476 feet (145 m)
Width66 feet (20 m)
No. of spans1
No. of lanes4
DesignerConnecticut Department of Transportation
Constructed byO & G Industries
Construction startMarch 1999 (1999-03)
Construction endFall 2001
Construction cost$13 million
OpenedSeptember 2000 (2000-09)
Frog Bridge is located in Connecticut
Frog Bridge
Frog Bridge
Location in Connecticut

The Frog Bridge (Officially the Thread City Crossing) is a bridge located in Willimantic, Connecticut which carries South Street (CT 661) across the Willimantic River. It is known as the Frog Bridge because it has 4 copper frogs located on each end of the bridge, sitting on top of concrete thread spools. They were designed and created by artist Leo Jensen of Ivoryton, Connecticut.[1][2][3]


It is designed and named this way because of a story called "The Battle of the Frogs" which in 1754, a large-scale death of frogs in a pond called Frog Pond, about a mile east of Windham Center. In turn of the widespread deaths of frogs, many people thought it was the French and Indians coming to the town and killing residents of the small town.[4][5][6][7]


Previous bridge[edit]

The old bridge

The bridge was built to replace an 1857 stone arch bridge located in the middle of the mill complex. The original bridge was planned to be replaced as early as 1872. Another effort to replace the old bridge was made at the turn of the 20th century, but ended up with a compromise resulting in the Willimantic Footbridge. The bridge was closed shortly after the opening of the Frog Bridge, remaining closed until October 2006 when it reopened as the Windham Garden on the Bridge, a pedestrian bridge.[8]

Current bridge[edit]

In 1986, then-state legislator John Lescoe introduced a bill to fund a feasibility study for a new bridge over the Willimantic River. The funding was finally approved in 1991.[5] The first design for the bridge just had the spools of thread but after the community did not approve it, an architect was hired from the state who added the frogs. The bridge started construction in March 1999 and it opened in September 2000 but full project for the surrounding area was not completed until the Fall of 2001.[9] In 2002, the FHA awarded the Frog Bridge an honorable mention for Excellence in Highway Design in the category of Historic Preservation.[10][11][7] The bridge was built over a man-made waterfall which used to provide power for the Jillson Mills.[12]


The Frog Bridge in December 2018

The bridge is a simple compression iron arch bridge that crosses the Willimantic River and a railroad line owned by the New England Central Railroad. It carries South St. that connects to Route 32 and Route 66. It has 8 concrete thread spools, 4 with green-colored copper frogs, the frogs eye's have gold leaf covering it. Outside of the frogs, the bridge is more like a conventional highway bridge.[1]


  1. ^ a b "The Frog Bridge, Willimantic". Retrieved 2016-09-20.
  2. ^ "Frog Bridge, WillimanticCT | CT". Retrieved 2016-09-20.
  3. ^ Boyer, Crispin (2012-03-13). National Geographic Kids Ultimate U. S. Road Trip Atlas: Maps, Games, Activities, and More for Hours of Backseat Fun. National Geographic Books. ISBN 9781426309335.
  4. ^ "Windham Historical Society". Retrieved 2016-09-20.
  5. ^ a b Oglesby, Scott. "The Frog Bridge (Thread City Crossing)". Retrieved 2016-09-20.
  6. ^ "Bridge Ornaments Help Tell the Legend of the Windham Frog Fight |". Retrieved 2016-09-20.
  7. ^ a b Nicholson, Thomas D'Agostino + Arlene (2011-08-16). Connecticut Ghost Stories and Legends. Arcadia Publishing. ISBN 9781614237938.
  8. ^ "Windham Garden on the Bridge - Willimantic, CT". Retrieved 2018-04-23.
  9. ^ Polk, Nancy. "Once Again, Frogs Land in Willimantic". Retrieved 2018-06-22.
  10. ^ "2002 Thread City Crossing 'The Frog Bridge', Willimantic, Connecticut - 2002 Awards - Excellence in Highway Design - Design Standards - Design - Federal Highway Administration". Retrieved 2016-09-20.
  11. ^ "Frog Bridge (Willimantic)". Retrieved 2016-09-20.
  12. ^ " - Thread City Crossing". Retrieved 2017-03-15.

External links[edit]