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Projects List

The project included demolition of the existing bridge, rebuilding and strengthening the existing granite-faced unreinforced concrete piers, and construction of three truss sections that each span 300 feet. The main bridge spans employ a unique “gussettless” Warren Truss using cold-bent plate girders. The 300-foot lift span is driven by electric motors mounted under the lift span and connected by a longitudinal shaft.

Walsh Group

Memorial Bridge Replacement

This design-build of a new vertical lift bridge between Portsmouth, New Hampshire, and Kittery, Maine. 

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Bridge 8 is the only vehicular movable bridge in the State of Vermont and will be replaced on a new foundation, with a similar aesthetic and the same draw width as the existing bridge built in 1953 that is being replaced. The project’s purpose is to ensure safe passage by providing a structurally stable roadway for the traveling public. Specifically, the project involves the replacement of the existing bridge along with associated roadway improvements and incidental items. Consistent with the existing bridge structure, the new bridge will provide an 80+ foot wide navigation channel with 10 feet of clearance in the closed position (ordinary high water) and unlimited vertical clearance when open.

Due to the excessive traffic detour distance, it has been determined that a temporary bridge will be established during construction of the new bridge. The temporary bridge (single leaf bascule) will provide two lanes of vehicular traffic and will have a 40-foot wide navigation channel. In the closed position, the under clearance will be 10 feet (ordinary high water).

Cianbro

Bridge 8

Cianbro is replacing Bridge 8, a historic double-leaf bascule bridge that carries U.S. Route 2 over Lake Champlain between the towns of North Hero and Grand Isle.

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PCL’s Special Projects division was awarded a bridge preservation contract, which included structural, mechanical, electrical, architectural and utility improvements, while ensuring minimal disruptions to the traveling public. As an expert contractor in movable bridges, PCL’s team worked closely with the Department of Transportation and the designer to optimize traffic control plans allowing for daily, full-traffic access to the bridge while construction continued.

PCL also used our solution provider mentality to solve the challenges that arose such as the installation of submarine cable. While the cable was only permitted to be installed in two months, outside of an in-water Atlantic sturgeon work moratorium, the team revised the layout of the cable in order to minimize the material lead time as well as the time allotted to complete the work within this critical schedule.

With over 30,000 work hours performed, PCL’s team allowed for the safe and reliable movement of people and goods throughout the entire construction process, providing the communities of North Carolina a sturdy, dependable bridge for years to come.

PCL Constructors

Isabel Holmes Bridge

This design-build of a new vertical lift bridge between Portsmouth, New Hampshire, and Kittery, Maine. 

Modjeski & Masters has opened four offices in Florida since 2022. Their office in Fort Lauderdale has won the rehabilitation design work for the Boca Inlet Bascule Bridge in Boca Raton, FL. This bridge is a single leaf bascule bridge carrying A1A/South Ocean Drive over the inlet between the Atlantic Ocean and Florida’s Intracoastal Waterway. 

The scope of the rehabilitation will primarily involve the electrical control and power system replacement with a fully redundant system. Span drives and motors will also be replaced. For the mechanical work, live load shoes will be replaced. Modjeski & Masters will utilize several innovative solutions for this project including the use of a Control Rail rather than a traditional Control Consol in order to save space and provide better operator visibility. 

For the structure's piers, scour countermeasures will be implemented. This will include the use of marine mattresses and rubble riprap. 

This design project is estimated to be completed in 2025.

Modjeski and Masters

Boca Inlet Bascule Bridge (A1A/South Ocean Drive) Rehabilitation

Modjeski & Masters has been selected to work with FDOT's District 4 in the rebabilitation of the Boca Inlet Bascule Brdige.

The replacement bridge will consist of two 11-foot travel lanes in each direction, 8-foot sidewalks and 7-foot bike lanes in both directions. 

The new bridge will be a twin double-leaf drawbridge, feature a concrete bridge deck to reduce traffic noise, a new tender house and pedestrian overlooks.

The first of the two spans is anticipated to open in early 2025 with the second span opening in the Spring of 2025.

Southland Contracting

US 1/Jupiter Federal Bascule Bridge Replacement

Southland Contracting is making progress on the replacement of the US1/Jupiter Federal Bascule Bridge

While not a big project by most standards, there are several structural and mechanical components of this bridge that needed to be addressed and that are currently being repaired/replaced as part of this contract. 

The US31/cypress Street Bascule spans the Manistee River in Manistee, MI. 

The project is anticipated to be completed in late 2024.

Milbocker and Sons

US31 Bascule Bridge Rehabilitation - Manistee, MI

Milbocker and Sons are working on a rehabilitation project for his double leaf bascule bridge.

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