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Canada

St. Lawrence Seaway Bridge

Project description

Linking Lake Ontario to Lake Erie, The Welland Canal cuts 42 km across Canada’s Niagara Peninsula from Port Colborne to Port Weller. A series of eight locks lift and lower vessels 100 meters and enables maritime commerce to bypass Niagara Falls.

Located adjacent to Lock 2, the St. Lawrence Seaway Bridge is also named as route 83 or Carlton Street. The length of the structure is 80 meter and it is supported by a total of five spans.

mageba scope

The flexible plug expansion joint system, TENSA-POLYFLEX-ADVANCED PU, is a complete new development based on elastic polymers and a further development of the traditional asphaltic plug joint, whereby disadvantages of the traditional bituminous plug joint (e. g. debonding, plastic deformation, rutting, overload due to standing traffic, etc.) can be eliminated and i increasing the durability greatly.

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Typical joint section detail, a total of four joints will be replaced in this project

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Installation of the TENSA®POLYFLEX® Advanced PU flexible plug expansion joints expansion joint and support ribs

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Filling of cut slots with polymer concrete to form the asphalt-strengthening ribs – and placing of a polymer concrete subbase within the recess as required

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Surface levelling of substructure

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Anchoring of pre-cut perforated steel angles in place

Newsflash-St-Lawrence-Seaway-Bridge-polyflex-poured-upto-road-level

Pouring and levelling of TENSA®POLYFLEX® material flush with the connecting road / footway surfaces

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This type of joint can be installed to perfectly suit the most challenging surface geometries

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One of the bridge’s flexible plug expansion joints, showing the asphalt-strengthening ribs at both sides

Key Data

Products:

TENSA®POLYFLEX® Advanced PU flexible plug expansion joints type PA30

Features:

+20/-10 mm movement, support ribs

Installed:

2017

City:

St. Catharines

Structure:

CIP Concrete

Length:

80 m

Owner:

St. Lawrence Seaway

Contractor:

Rankin Construction