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The Ely Viaduct ( Welsh : Traphont Trelái ) crosses over the River Ely and also the main South Wales railway line .
The viaduct is a 538 ft ( 164 m ) twin @-@ box girder and has central span of 230 ft ( 70 m ) and 150 ft ( 46 m ) side spans , constructed by the balanced cantilever method . It was constructed in segments each weighing between 54 tons for plain segments to 93 tons for the main segments .
= = = Ely Link Road = = =
The Ely Link Road ( Welsh : Ffordd Gyswllt Trelái ) between the Culverhouse Cross Interchange ( 51 @.@ 465840 ° N 3 @.@ 269895 ° W  / 51 @.@ 465840 ; -3.269895  ( Culverhouse Cross Interchange ) ) and the Leckwith Interchange ( 51 @.@ 470641 ° N 3 @.@ 211762 ° W  / 51 @.@ 470641 ; -3.211762  ( Leckwith Interchange...
= = = Grangetown Link Road = = =
The 2 @.@ 89 km ( 1 @.@ 80 mi ) Grangetown Link Road ( Welsh : Ffordd Gyswllt Trelluest ) between the Leckwith Interchange ( 51 @.@ 470159 ° N 3 @.@ 211239 ° W  / 51 @.@ 470159 ; -3.211239  ( Leckwith Interchange ) ) and the Ferry Road Interchange ( 51 @.@ 453510 ° N 3 @.@ 185760 ° W  / 51 @.@ 453510 ; -3.185760  ...
= = = = Grangetown Viaduct = = = =
The Grangetown Viaduct ( Welsh : Traphont Trelluest ) is approximately 1 km ( 0 @.@ 62 mi ) in length and is said to be the longest glued segmental bridge in the United Kingdom . It has 13 spans of 71 meters ( 233 ft ) with 2 end spans of 38 m ( 125 ft ) and 46 m ( 151 ft ) .
The viaduct was designed by South Glamorgan County Council . Robert Benaim and Associates , now called Benaim UK Ltd designed the initial launching system for the glued segmental structure .
= = = Butetown Link Road = = =
The 2 @.@ 57 km ( 1 @.@ 60 mi ) Butetown Link Road ( Welsh : Ffordd Gyswllt Butetown ) between the Ferry Road Interchange ( 51 @.@ 453585 ° N 3 @.@ 184044 ° W  / 51 @.@ 453585 ; -3.184044  ( Ferry Road Interchange ) ) and the Queen 's Gate Roundabout ( 51 @.@ 467873 ° N 3 @.@ 157455 ° W  / 51 @.@ 467873 ; -3.157455...
In 1987 South Glamorgan County Council had intended to build a viaduct cross the River Taff and then go onto an elevated section through Butetown " on stilts " . But the newly formed Cardiff Bay Development Corporation along with local residents objected to the scheme that they said would cut through Butetown and spli...
The contract to build the Butetown Link Road was eventually won by a local company Davies Middleton & Davies Ltd in a joint venture with an Italian contractor , Cogefar @-@ Impresit UK Ltd . The bid of £ 60 million undercut all other bids by £ 10 million , Davies Middleton & Davies Ltd have subsequently gone into admi...
= = = = Queen 's Gate Tunnel = = = =
The Queen 's Gate Tunnel ( Welsh : Twnnel Porth y Frenhines ) , also known as the Butetown Tunnel , is underneath southern Butetown and follows a line underneath the Wales Millennium Centre . The 715 m ( 2 @,@ 346 ft ) twin tunnel was constructed using the cut and cover method of construction , which involves digging ...
South Glamorgan County Council originally awarded the contract for the management , installation , testing and commissioning of all electrical and mechanical services for the tunnel , and the water pumping stations to EI · WHS Ltd . They still maintain the tunnel on behalf of Cardiff Council .
= = = = Taff Viaduct = = = =
Construction of the 600 m ( 2 @,@ 000 ft ) Taff Viaduct ( Welsh : Traphont Tâf ) includes a dual @-@ carriageway roadway plus a foot and cycle path . South Glamorgan County Council was the local authority in charge of the project at the time and construction of the viaduct began in March , 1991 . The Taff Viaduct cros...
The viaduct was constructed using precast concrete segments , which is widely used in the construction industry for medium to long span viaducts . Segments were made in a casting yard near the site and then transported for final assembly of the viaduct .
= = = Eastern Bay Link Road = = =
Construction began on 17 March 2016 on the 5 @.@ 25 km ( 3 @.@ 26 mi ) Eastern Bay Link Road ( Welsh : Ffordd Gyswllt Ddwyreiniol y Bae ) which will run from the Queen 's Gate Roundabout to the Rover Way – Lamby Way Roundabout on the Southern Way Link Road , although at present only the first phase between Queen 's Ga...
For many years this link road has been mothballed due to the costs involved . The link road had previously been known as the East Moors Link Road – Phase 1 and 3 , but it also included the East Moors Viaduct , which was originally known as the East Moors Link Road – Phase 2 . Later it became known as the Cardiff Bay L...
The Eastern Bay Link Road , along with other schemes have been subject to many planning proposals since the last link road ( the Butetown Link Road ) was finished in 1995 , namely a local transport plan ( Local Transport Plan 2000 – 2016 ) in August 2000 , a green paper ( A Change of Gear ) in December 2002 and a whit...
The original route of the link road had been challenged by both Friends of the Earth Cymru , and also the Royal Society for the Protection of Birds ( RSPB ) , who had both lodged formal objections against the link road . However , the current proposal from Cardiff Council of 31 October 2006 is to complete the first ph...
It was revealed on 14 June 2013 that Edwina Hart , Minister for Economy , Science and Transport in the WAG supported the completion the Eastern Bay Link Road . She said that the link road would ; improve access to Cardiff Bay , improve access to the Cardiff Central Enterprise Zone and enhance connections within the Ca...
Increase accessibility from east Cardiff to major employment sites in the East Moors area , Cardiff Bay and the Central Cardiff Enterprise Zone
Provide a more direct route between the Butetown Tunnel and Rover Way
Reduce congestion at the junctions on Tyndall Street by removing traffic currently using the Ocean Way- East Tyndall Street – Central Link route
Reduce journey times for private and commercial road users
Help economic regeneration
Enhance road safety and reduce casualties
Improve resilience on the strategic road network around Cardiff
Provide more opportunities for cycling and walking
On 2 May 2014 , Edwina Hart approved the procurement of the design – build contractor , advance service diversion works and communications arrangements for the Eastern Bay Link Road . Construction of this first phase of the Eastern Bay Link Road is due to begin in 2015 and will take 18 months to complete . In April 20...
= = = Southern Way Link Road = = =
The Southern Way Link Road ( Welsh : Ffordd Gyswllt y Ffordd Deheuol ) , generally known simply as Southern Way , was built in two parts ; the first section of Southern Way to be completed was between Newport Road ( A4161 road ) and the Eastern Avenue ( A48 road ) in 1978 . The final section of the link road was built...
= = = = East Moors Viaduct = = = =
The 900 m ( 3 @,@ 000 ft ) East Moors Viaduct ( Welsh : Traphont Rhostiroedd y Dwyrain ) , which is also known as the Southern Way Flyover , was also designed by Robert Benaim and Associates who won the ICE ( Institution of Civil Engineers ) Project Award and also a Concrete Society Commendation , both in 1985 for wor...
= = = Pentwyn Link Road = = =
The Pentwyn Link Road ( Welsh : Ffordd Gyswllt Pentwyn ) , which is also known as the North Pentwyn Link Road , runs from the Pontprennau Interchange ( 51 @.@ 528660 ° N 3 @.@ 130240 ° W  / 51 @.@ 528660 ; -3.130240  ( Pontrennau Interchange ) ) on the A48 and the Pentwyn Interchange ( 51 @.@ 541525 ° N 3 @.@ 128749...
= = Public Art & Commemorative Stones = =
= = Spur roads = =
= = = Cogan Spur ( A4055 ) = = =
The Cogan Spur , which is also known as the Cogan Link ( Welsh : Gyswllt Cogan ) , from the Ferry Road Interchange ( 51 @.@ 453519 ° N 3 @.@ 184876 ° W  / 51 @.@ 453519 ; -3.184876  ( Ferry Road Interchange ) ) to Barons Court Junction ( 51 @.@ 447910 ° N 3 @.@ 189787 ° W  / 51 @.@ 447910 ; -3.189787  ( Barons Cou...
The most recent development , which began at the end of 2006 and into 2007 was the widening of the road between the Cogan Viaduct and the Ferry Road Interchange to a 3 @-@ lane dual @-@ carriageway . A new junction was also built for the Cardiff International Sports Village directly from Cogan Spur ; also the Barons C...
= = = = Cogan Viaduct = = = =
The Cogan Viaduct ( Welsh : Traphont Cogan ) is the most important element of the Cogan Spur as it crosses the River Ely with a central span of 95 metres ( 312 ft ) . In total it has 6 spans ; 40 m ( 130 ft ) , 60 m ( 200 ft ) , 60 m , 60m , 95 m and 60 m . It is made from a multi @-@ span glued segmental structure of...
= = = Central Link Road ( A4234 ) = = =
The £ 8 @.@ 5 million Central Link ( Welsh : Ffordd Gyswllt Canolog ) between the Queen 's Gate Roundabout ( 51 @.@ 468399 ° N 3 @.@ 157366 ° W  / 51 @.@ 468399 ; -3.157366  ( Queen 's Gate Roundabout ) ) and the junction on Adam Street ( 51 @.@ 479557 ° N 3 @.@ 167631 ° W  / 51 @.@ 479557 ; -3.167631  ( Adam Stre...
= = Abandoned spur roads = =
= = = Ely Spur = = =
The Ely Spur was planned to run from a new interchange on the Ely Link Road to the Ely Bridge Roundabout on the A48 . It was only 1 @.@ 2 km ( 0 @.@ 75 mi ) in length , but it would have reduced through traffic in the residential area of Ely , namely on Cowbridge Road West traveling to and from the A48 . But it has no...
= = = Cardiff Airport Link Road = = =
The Cardiff Airport Link Road ( Welsh : Ffordd Gyswllt Maes Awyr Caerdydd ) was a proposed spur road off of the A4232 through to Cardiff Airport , when plans for the road were scrapped by the WAG in June 2009 . The current single carriageway A4050 road , from Cardiff to Cardiff Airport is also the main road from Barry...
One of the 4 proposed schemes involved a new major highway route linking the Ely Link Road ( PDR ) , south of the Culverhouse Cross Interchange , through to the A4226 north of Barry . The estimated cost of this scheme would have been £ 96m , including the widening of the A4232 .
= = Services = =
The PDR has two service stations for motorists , one at Cardiff West on the Capel Llanilltern Interchange and the other at Cardiff Gate on the Pentwyn Interchange . The services at Cardiff West includes Esso petrol , a Travelodge , Burger King , Costa Coffee and W H Smith , while the services at Cardiff Gate includes ...
Traffic Wales is the Welsh Government 's traffic information service , it is a partnership between the Welsh Government , the two Trunk Road Agents ( South Wales TRA / Norh & Mid Wales TRA ) and the WTTC consultancy Amey . In South Wales the service is managed from the South Wales Traffic Management Centre , also home...
= = Traffic congestion = =
Since the western link roads were built , a number of major developments have been built , such as the Cardiff Bay Retail Park , IKEA , Celtic Gateway , Cardiff International Sports Village that includes the Cardiff International Pool , Cardiff International White Water and Cardiff Arena , which have all generated add...