Photo of Arnold L. Oldridge and one of the engineers inside Conwy tunnel

This material is held atGwasanaeth Archifau Conwy / Conwy Archive Service

Reference
- GB 2008 CP326/29
Dates of Creation
- 1991
Physical Description
- 1 item

Archive Record|Table of contents

Construction of the Conwy Tunnel for the A55 ExpresswayCP326

Photos of the construction of the approach road and entrance to east cut and coverCP326/1

Photos of the units being constructed for the Conwy tunnelCP326/2

Photos of the units nearing completion for the Conwy tunnelCP326/3

Photos of the dredging of the channel across the estuaryCP326/4

Photos of flooding of casting basin for the Conwy tunnelCP326/5

Photo of where the units will be submerged to form tunnel; viewed from DeganwyCP326/6

Photo of Conwy estuary with view of Deganwy and Llandudno JunctionCP326/7

Photo of a dredger at work in the estuaryCP326/8

Photo of slurry pipes to carry dredged materialCP326/9

Photo of reclamation for wildlife sanctuaryCP326/10

Photo of plastic sheeting being laid up for the Conwy tunnelCP326/11

Photo from Deganwy pier of placing of pontoons for Conwy tunnelCP326/12

Photo of unit being moved into sinking positionCP326/13

Photo of two pontoons moving into position above unitCP326/14

Photo of west and east cut and cover sitesCP326/15

Photo of west cut and cover entranceCP326/16

Photo of back up batteries for construction of Conwy tunnelCP326/17

Photo of the construction of the flyover near Llandudno JunctionCP326/18

Photo of Conwy estuary and the Great OrmeCP326/19

Photos of the preparation for the float outCP326/20

Photos of float out for the construction of Conwy tunnelCP326/21

Photos of the dredging of the channelCP326/22

Photos of the flooding of basin completedCP326/23

Photos of the construction of bridge over approach road to east tunnel entranceCP326/24

Photo of Mulberry Harbour commemorative plaqueCP326/25

Photo of jetty for loading unsuitable excavated material for dumping in Irish seaCP326/26

Photos of the construction of the west entrance of the Conwy tunnelCP326/27

Photos of the construction of Conwy tunnel entranceCP326/28

Photo of Arnold L. Oldridge and one of the engineers inside Conwy tunnelCP326/29

Photo of the inside of Conwy tunnel after sections had been put into placeCP326/30

Photo of the inside of Conwy tunnelCP326/31

Photo of the inside of Conwy tunnelCP326/32

Photo of Conwy estuaryCP326/33

Photo of the inside of Conwy tunnel control roomCP326/34

Photo of the inside of Conwy tunnel control roomCP326/35

Photo of construction of pipes to support Conwy tunnelCP326/36