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A 110 metre long temporary road bridge

weighing 350 tonnes has been launched

over the Great Western Main Line as part

of Crossrail improvement works in the


The temporary structure has been in-

stalled at Thorney Lane, in Iver, ahead of

the demolition of the existing bridge at


Both Thorney Lane Bridge and Stoke

Poges Bridge in Slough will be demolished

at Christmas and replaced with perma-

nent bridges to allow enough room for

overhead electric cables to be installed

over the tracks on the Great Western

Main Line.

Excavations At


Crossrail Paddington contractors, Costain Skanska

Joint Venture, has excavated down to the new

Crossrail tunnels, breaking into the top of the

tunnels 16 metres below ground level, as part of

construction of the new station.

Costain Skanska will excavate the earth between

the two tunnels creating a large open station plat-

form level. Once excavation is completed, they will

start building the station platforms and laying the

track bed.

Costain Skanska JV Construction Manager Andy

Mooney said:

“Reaching the tunnels marks an important

phase in the construction of Paddington

station. The excavation down 16 metres

underneath Eastbourne Terrace will allow

us, once we have removed all of the 2,640

individual tunnel segments, to start the

construction of the platforms and track bed.”

Tunnelling machines Phyllis and Ada built the

new train tunnels through Paddington at the begin-

ning of 2013 ahead of completing their 6.8 km jour-

neys to Farringdon in autumn 2013.

Costain Skanska’s workforce of 400 subsequent-

ly excavated more than 40,000 tonnes of earth to

reach the western running tunnels.

Following the completion of the platform and

track bed construction, system-wide contractor ATC

(Alstom, TSO & Costain) will commence fit-out of

the new tunnels with track and other rail infrastruc-


The new Crossrail station is being constructed

adjacent to the existing Paddington National Rail

station under Eastbourne Terrace. The 250 m long

and 30 m wide spacious station will include a 120 m

long glass canopy.


350 t. bridge


Page 20

Contractors World UK & Ireland Vol 4 No 4