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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.
Typical joint section detail, a total of four joints will be replaced in this project
Installation of the TENSA®POLYFLEX® Advanced PU flexible plug expansion joints expansion joint and support ribs
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
Surface levelling of substructure
Anchoring of pre-cut perforated steel angles in place
Pouring and levelling of TENSA®POLYFLEX® material flush with the connecting road / footway surfaces
This type of joint can be installed to perfectly suit the most challenging surface geometries
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 |
