Editing Chiltern Main Line (section)

=== Tunnels and viaducts ===
[[File:Give Peas a chance! (geograph 2391585).jpg|thumb|The "Give Peas a Chance" viaduct is a landmark on the M25]]
There are several major civil engineering structures along the route of the Chiltern Main Line.<ref name=":0">{{cite book |title=Railway Track Diagrams Book 3 Western |last=Bridge |first=Mike |publisher=Trackmaps |year=2010 |isbn=978-0-9549866-6-7 |location=Bradford on Avon |pages=13, 18 19}}</ref><ref name=":1">{{cite book |title=Railway Track Diagrams Book 4 Midlands & North West |last=Bridge |first=Mike |publisher=Trackmaps |year=2013 |isbn=978-0-9549866-7-4 |location=Bradford on Avon|pages=14, 15}}</ref>

The viaduct ([[Chalfont Viaduct|Chalfonts No. 1 (Misbourne) Viaduct]]) crossing the M25 between Denham Golf Club and Gerrard's Cross is especially noted as a local landmark, as for many years it has borne a [[graffiti]] slogan, "{{smallcaps|give peas a chance}}" painted in large white letters on the south-facing parapet.<ref name="bbc-peas">{{cite news |last1=Winterman |first1=Tom de Castella and Denise |title=Campaigning by graffiti |url=https://www.bbc.co.uk/news/magazine-13524208 |access-date=20 September 2018 |work=BBC News |date=25 May 2011 |archive-url=https://web.archive.org/web/20180920153837/https://www.bbc.co.uk/news/magazine-13524208 |archive-date=20 September 2018|url-status=live}}</ref> The graffiti was partially removed in 2018.<ref name="es-peas">{{cite news |last1=Clifton |first1=Katy |title=Motorists devastated as iconic 'Give Peas a Chance' graffiti is erased |url=https://www.standard.co.uk/news/uk/motorists-devastated-as-iconic-give-peas-a-chance-m25-graffiti-is-erased-a3941311.html |access-date=20 September 2018 |work=Evening Standard |date=20 September 2018 |archive-url=https://web.archive.org/web/20180920154003/https://www.standard.co.uk/news/uk/motorists-devastated-as-iconic-give-peas-a-chance-m25-graffiti-is-erased-a3941311.html |archive-date=20 September 2018|url-status=live}}</ref>

{| class="wikitable"
|+Tunnels and viaducts on the Chiltern Main Line
!Railway Structure
!Length
![[Engineer's Line Reference|ELR]]
!Location
|-
|[[Snow Hill Tunnel (Birmingham)|Snow Hill Tunnel]]
|{{convert|635|yard|m|0|lk=in}}
| rowspan="6" |DCL
|South of [[Birmingham Snow Hill railway station|Snow Hill station]]
|-
|Bordesley Viaduct
|{{convert|38|chain|m|-1|lk=in}}
|South of [[Birmingham Moor Street railway station|Moor Street station]]
|-
|Goods Yard Approach & Corporation Yard Viaducts
|{{convert|18|chain|m|-1}}
|[[Bordesley railway station|Bordesley station]]
|-
|River Avon Viaduct
|{{convert|3|chain|m|-1}}
|Between [[Warwick railway station|Warwick]] and [[Leamington Spa railway station|Leamington Spa stations]]
|-
|Leamington Viaducts / Neilson Street Viaduct
|{{convert|18|chain|m|-1}}
|East of Leamington Spa station
|-
|[[Harbury|Harbury Tunnel]]
|{{convert|70|yard|m|0}}
|Between Leamington Spa and [[Banbury railway station|Banbury stations]]
|-
|Aynho Flyover (Down line)
|
| rowspan="5" |NAJ3
|Between [[Kings Sutton railway station|Kings Sutton]] and [[Bicester North railway station|Bicester North stations]]
|-
|Souldern No. 2 Viaduct
|{{convert|400|yard|m|0}}
| rowspan="3" |Between [[Aynho Junction|Aynho junction]] and Bicester North station
|-
|Souldern No. 1 Viaduct
|{{convert|580|yard|m|0}}
|-
|Ardley Tunnel
|{{convert|1155|yard|m|0}}
|-
|Brill Tunnel
|{{convert|191|yard|m|0}}
|Between Bicester North and [[Haddenham & Thame Parkway railway station|Haddenham and Thame Parkway stations]]
|-
|River Thame Viaduct
|{{convert|4|chain|m|-1}}
| rowspan="11" |NAJ2
|North of Haddenham and Thame Parkway station
|-
|Saunderton Tunnel (Up line)
|{{convert|83|yard|m|0}}
|South of [[Princes Risborough railway station|Princes Risborough station]]
|-
|Hughenden Road Viaduct
|{{convert|77|yard|m|0}}
|North of [[High Wycombe railway station|High Wycombe station]]
|-
|Gordon Road Viaduct
|{{convert|47|yard|m|0}}
| rowspan="3" |Between High Wycombe and Beaconsfield stations
|-
|Sir Philip Rose's Viaduct
|{{convert|66|yard|m|0}}
|-
|Whitehouse Tunnel
|{{convert|352|yard|m|0}}
|-
|'Tesco' Covered Way (also known as [[Gerrards Cross Tunnel]])
|{{convert|350|yard|m|0}}

|South of [[Gerrards Cross railway station|Gerrards Cross station]]
|-
|Chalfonts No. 2 Viaduct
|{{convert|165|yard|m|0}}
| rowspan="2" |Between Gerrards Cross and [[Denham Golf Club railway station|Denham Golf Club stations]] 
|-
|[[Chalfont Viaduct|Chalfonts No. 1 (Misbourne) Viaduct]] (also M25 under)
|{{convert|114|yard|m|0}}
|-
|River Colne Viaduct
|{{convert|121|yard|m|0}}
| rowspan="2" |South of [[Denham railway station|Denham station]]
|-
|Grand Union Canal Viaduct
|{{convert|198|yard|m|0}}
|-
|South Harrow Tunnel
|{{convert|204|yard|m|0}}
|NAJ1
|West of [[Sudbury Hill Harrow railway station|Sudbury Hill Harrow station]]
|-
|Kilburn Viaduct
|{{convert|23|chain|m|-1}}
| rowspan="3" |MCJ1
| rowspan="3" |North of Marylebone station
|-
|Hampstead Tunnel
|{{convert|694|yard|m|0}}
|-
|St John's Wood Tunnel
|{{convert|1606|yard|m|0}}
|}