Thaddeus Kosciusko Bridge

The Thaddeus Kosciusko Bridge consists of two identical steel arch structures that span the Mohawk River and link Colonie to Halfmoon across county lines. Each bridge carries three lanes of traffic in each direction, creating a substantial crossing over the water.

The crossing opened in 1959 as part of the Adirondack Northway expansion, quickly linking the growing region north of Albany with the capital area. Governor Nelson Rockefeller formally dedicated the Interstate 87 stretch through here in May 1961.

The bridges carry the name of General Tadeusz Kościuszko, a Polish officer who fought in the American Revolution and later served his homeland. This naming reflects a connection between American and European struggles for independence.

The structure underwent a major deck replacement in 2013 using lightweight precast concrete elements to reduce overall weight and extend service life. Travelers should expect busy conditions during peak hours, as the crossing carries a high volume of traffic between regions.

The crossing handles around 115,000 vehicles on typical weekdays, making it one of the main transportation corridors in New York's Capital District. This heavy traffic volume underscores the bridge's role as a regional artery connecting rural areas to urban centers.

Location: New York

Inception: 1959

Official opening: 1959

GPS coordinates: 42.79150,-73.76150

Latest update: December 7, 2025 20:50