Project Details

Primary Contractor
New York State Department of Transportation
$78.4 million
May 2010
Start Date
December 2011
Completion Date

Building Lake Champlain Bridge

Flatiron constructed the new Lake Champlain Bridge in northern New York State. The new two-lane steel arch-span structure replaces a structurally deficient two-lane bridge demolished in December 2009. Spanning Lake Champlain, the new 2,200-foot-long bridge reconnects Essex County, N.Y. and Addison County, Vt.

For two years, those traveling between the two counties relied either on a 100-mile detour around the lake or a ferry system initiated after the old structure was closed. Now, motorists can enjoy a delay-free crossing. The impact to the local community was the driving factor for the aggressive 490-day completion schedule.

The bridge included construction of 1,029-foot approach on the New York side and a 769-foot approach on the Vermont side. The main span comprises a basket handle modified network steel tied-arch that will be 402 feet long and 80 feet tall, supported on delta fixed frames. It has a basket handle arch with a network cable arrangement and internally redundant box tie girders supporting a composite precast deck system. The entire main span structure was built on land at an off-site location and floated to the site on barges where strand jacks were used at each corner to complete erection. A main feature of the new bridge is the zinc metalized corrosion protection that will be applied to the structural steel. The new bridge one of the largest in North America to be completely zinc metallized. The work also includes roadway approaches on either side of the bridge and demolition of temporary causeways and ferry docks.

2,200-foot-long bridge

Basket handle modified network tied arch

Zinc metallized corrosion protection reduces future maintenance

Cast-in-place concrete deck supported by structural steel girders

Engineering News-Record New York
Best Civil/Infrastructure Project 2012
AGC of New York State
Jeffrey J. Zogg Build New York Award 2012
New York State Department of Transportation
Green Leadership in Transportation and Environmental Sustainability Award 2012
American Public Works Association
Transportation Project of the Year Award 2013