Thornborough Bridge

{{Use dmy dates|date=September 2017}}

{{Use British English|date=September 2017}}

{{Infobox bridge

|bridge_name= Thornborough Bridge

|image=Thornborough Bridge.JPG

|image_size=250px

|caption= View from the south

|official_name=

|carries=Pedestrians (from 1974)
A421 road (pre-1974)

|crosses=Padbury Brook, tributary of River Great Ouse

|locale= Buckingham/Thornborough parish border, Buckinghamshire

|maint=

|id=

|designer=

|design=

|material=Stone

|spans= 6

|pierswater=3

|mainspan=

|length= 30m (approx)

|width= 4m (approx)

|height=

|clearance=

|below=

|traffic=

|open= 14th century

|toll=

|map_cue=

|map_image=

|map_text=

|map_width=

|coordinates= {{coord|51.99248|-0.93935|type:landmark_region:GB|format=dms|display=inline,title}}

|heritage= Grade I listed structure

}}

Thornborough Bridge is situated on the original Bletchley to Buckingham road, now bypassed by a modern bridge in 1974 for the A421. The bridge is accessible to pedestrians from an adjacent lay-by.

The bridge straddles the parish boundaries of Thornborough and Buckingham, where the parish boundary follows the line of Padbury Brook (also known as The Twins), a tributary of the River Great Ouse. Dating back to the end of the 14th century,{{cite web|title=Thornborough Bridge, Buckingham|url=http://transportheritage.com/find-heritage-locations.html?sobi2Task=sobi2Details&sobi2Id=438|website=Transport Heritage|accessdate=23 January 2015}}AVDC information board on-site "dates to 1400" it is the only surviving mediaeval bridge in Buckinghamshire. The parish division is marked by a boundary stone in the middle of the bridge.{{cite book|chapter=Parishes: Thornborough|chapter-url=http://www.british-history.ac.uk/vch/bucks/vol4/pp237-242|series=Victoria History of the Counties of England| title=A History of the County of Buckingham | volume =4|accessdate=23 January 2015|pages=237–242|date=1927}}

The stone bridge measures approximately {{convert|30|m|abbr=on}} long and {{convert|4|m|abbr=on}} wide, spanning the river with six low arches

.{{cite web|title=Plate 71: Thornborough and Buckingham, Thornborough Bridge|url=http://www.british-history.ac.uk/rchme/bucks/vol2/plate-71|website=An Inventory of the Historical Monuments in Buckinghamshire, Volume 2, North|accessdate=23 January 2015|page=71|date=1913}} Three refuges are formed within the parapet on the south side.

The bridge is Grade I listed by English Heritage.{{cite web|title=Thornborough Bridge, Buckingham|url=http://www.britishlistedbuildings.co.uk/en-407713-thornborough-bridge-buckingham-buckingha|website=British Listed Buildings|accessdate=23 January 2015}}

{{commons category|Thornborough Bridge, Buckinghamshire|Thornborough Bridge}}