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Aecom/URS Scott Wilson joint venture wins Forth Replacement job

An Aecom and URS Scott Wilson joint venture has been awarded the role of design checker for the Forth Replacement Crossing by the Forth Crossing Bridge Constructors (FCBC) consortium.

Aecom will perform the design check of the cable-stayed bridge including the complex cable arrangement and major marine foundation works. URS Scott Wilson will undertake the check of all aspects of the works, excluding the cable-stayed bridge, but including the abutments and approach viaducts to the main crossing and all roadworks and land based structures.

FCBC, comprising Dragados, Hochtief, American Bridge and Morrison Construction, won the year-long design and build competition in April. It includes the design and construction of the new bridge together with 7km of approach roads north and south of the crossing and the installation of an Intelligent Transport System for traffic management.

What will be built

The principal aim of Transport Scotland is to provide a replacement road crossing over the Firth of Forth due to the uncertainty over the current condition and long-term viability of the existing Forth Road Bridge. The main crossing across the Forth will provide a dual two lane carriageway, with hard shoulders, and consists of a cable-stayed bridge, with the three mono towers and two main spans of 650m each, along with approach viaducts connecting the bridge to the two abutments.

To the north of the Forth, approximately 2.5km of three-lane dual carriageway will be constructed with discontinuous hard shoulders to join the new crossing to the A90 and M90 as well as a major new grade separated junction at Ferrytoll and connector road at Ferrytoll. To the south a further 4.5km of new road will be provided to connect to the A90 and M9 Spur. There will also be a new grade separated junction at Queensferry, close to South Queensferry. In addition to the main line construction there will be 5.2km of new side roads, 3.5km of public transport links, a number of new road bridges, upgraded road bridges and pipeline protection structures.


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