MHB Consultants led the permanent and temporary works design for all remedial works to this severely collision-damaged composite bridge at Glencarse on the A90 between Perth and Dundee. Our contractor client was Taziker.
Our scope of works included inspection and survey of the existing structure, derivation of jacking loads, assessment of jacking points, design of main girder steelwork repairs, advice on heat straightening, temporary jacking arrangements, and all approvals.
The design also enabled the replacement of 12 bearings while traffic ran as normal on the bridge above. Steelwork repairs were carried out with one carriageway open throughout the works.
MHB Permanent works design
Design of main girder steelwork repairs, connections.
MHB Temporary works design
Bridge deck temporary propping design.
Jacking beams, design/assessment under live load.
Assessment of existing bridge deck in temporary case.
Scaffolding checks.
The steelwork repairs were concluded end of 2020.
Contractor Client: Taziker
Management Contractor: BEAR
Ultimate Client: Transport Scotland
Photos MHB Consultants | Video courtesy of Bear Scotland | LinkedIn post and photos within courtesy of Taziker.
Before
After
Bear Scotland - movie of bridge repair works
Bear Scotland Project Engineer Panos Kolokouris talks through what has been involved in the complex repairs to the #A90 Glencarse Overbridge between Perth and Dundee. The bridge was struck by an overheight vehicle in October 2019 which caused significant structural damage.
Taziker - finished works photos
A90 Glencarse bridge strike remedial works. This technically challenging project was split into two phases:
Phase 1 replacing damaged beams, heat straightening of other structural elements, bearing replacement and protective coatings.
Phase 2 involved planing of the overbridge carriageway, concrete repairs and waterproofing to the deck, kerbing, surfacing and expansion joints.
