Chiltern Tunnel North Portal

Trains will emerge from the Chiltern Tunnel into South Heath cutting which will be 16 metres deep. The portal will be on farmland just north of Frith Hill. The construction compound will be approximately 1.5ha in size and be in place for eight years. Access to the compound will be via a newly constructed temporary haul road. Realignment of one PRoW (Public Right of Way) will be required. Footpath GMI 13 will be closed during construction and then be permanently diverted to the south of the tunnel portal. The former Weights & Measures Gym (previously the Black Horse public house) will be demolished to allow permanent access to the portal from Frith Hill. A series of piles will be installed to support the last section of the tunnel through soft clay.

Frith Hill looking east – May 2022 (08_63)
Frith Hill looking north – May 2022 (08_62)
North tunnel portal looking north – Apr. 2022 (08_61)
North tunnel portal looking east – Apr. 2022 (08_60)
South Heath cutting looking east – Apr. 2022 (08_59)
Chiltern Tunnel north portal looking north – May 2016 (08_58)
Chiltern Tunnel north portal looking west – Apr. 2016 (08_57)
Chiltern Tunnel north portal looking west – Mar. 2019 (08_56)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_55)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_54)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_53)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_52)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_51)
Looking north from Frith Hill towards the north tunnel portal – Jan. 2022 (08_50)
Looking north across Frith Hill towards the north tunnel portal – Nov. 2021 (08_ 44)
Looking west across the north tunnel portal – Nov. 2021 (08_43)
Looking east across the north tunnel portal – Nov. 2021 (08_42)
Looking east across the North tunnel portal towards South Heath – Nov. 2021 (08_41)
North tunnel portal looking west – Nov. 2021 (08_40)
Demolition of the former Weights & Measures Gym in Frith Hill – Nov. 2021 (08_39)
The former Weights & Measures Gym – Nov. 2021 (08_38)
Looking towards the north tunnel portal from Frith Hill – Nov. 2021 (08_37)
Looking north towards the tunnel portal from PRoW GMI 16a – Nov. 2021 (08_36)
North tunnel portal looking west – Jul. 2021 (08_32)
Looking north towards the north tunnel portal earthworks from Frith Hill (MJ) – Sep. 2021 (08_31)
North tunnel portal looking west towards the haul road and Great Missenden – Jul. 2021 (08_26)
Chiltern Tunnel north portal looking west – Oct. 2020 (08_23)
Looking north towards the north tunnel portal from Frith Hill – Feb. 2021 (08_22)
North Tunnel Portal (08_14)
PRoW GMI 13/3 looking east – Aug. 2016 (08_13)
PRoW GMI 13/3 looking east – Jun. 2019 (08_12)
PRoW GMI 13/3 looking northwest – Aug. 2016 (08_11)
PRoW GMI 13/3 looking west – Jun. 2019 (08_10)
Tunnel Portal looking southwest – Aug. 2016 (08_09)
PRoW GMI 13/3 looking south – Jun. 2019 (08_08)
PRoW GMI 13/3 looking south – May 2019 (08_07)
Tunnel Portal looking north – May 2019 (08_06)
Tunnel Portal looking north – May 2019 (08_05)
PRoW GMI 13/3 looking north – Aug. 2016 (08_04)
PRoW GMI 13/3 looking north – Aug. 2016 (08_03)
PRoW GMI 13/3 looking south – Aug. 2016 (08_01)