Winthorpe Bridge

{{Infobox bridge

| bridge_name = Winthorpe Bridge

| image = Winthorpe Bridge, South Muskham (geograph 3134491).jpg

| image_size = 260px

| alt = View from grassy riverbank looking up at the natural white concrete arched form of bridge against a pale blue sky on a sunny day

| caption = View in September 2012

| carries = {{UK road|A1}}

| crosses = River Trent

| locale = Nottinghamshire, NG23

| owner =

| maint = National Highways

| architect =

| designer =

| engineering =

| design =

| material = Reinforced concrete

| length = {{convert|520|ft|m|abbr=on}}

| width = {{convert|82|ft|m|abbr=on}}

| height =

| mainspan = {{convert|260|ft|m|abbr=on}}

| builder = Christiani & Nielsen

| begin = March 1962

| cost = £465,695

| open = 27 July 1964

| traffic = A1 dual carriageway on the Newark bypass

| heritage = Grade II* listed{{NHLE|num=1323680 |accessdate=9 February 2017}}

| coordinates = {{coord|53.10|-0.80|display=inline,title}}

| os_grid_reference= SK805567

}}

Winthorpe Bridge is a concrete box girder bridge, carrying the A1 road over the River Trent in east Nottinghamshire.

History

=Construction=

The contracts for the bridge were awarded on 20 March 1962 for £495,695, and construction began on 16 July 1962. The six-mile bypass was to cost £3,250,000. It was opened on 27 July 1964, by Ernest Marples.

The bridge was constructed by the Danish bridge-builder Christiani & Nielsen.{{cite web|url=https://www.winthorpewithlangford-pc.gov.uk/the-a1-by-pass1|title=The A1 By-Pass|publisher= Winthorpe with Langford Parish Council|access-date=19 January 2025}} Another Danish civil engineering company Bierrum built the near cooling towers, along the River Trent to the north. The Newark bypass was built by Robert McGregor & Sons who would have laid the concrete pavement on the bridge. The north-bound surface had the concrete pavement laid in forty days, with three concrete-batching sites along the bypass preparing the concrete.

The bridge was Grade II* listed (1323680) on 29 May 1998.

Structure

The bridge crosses the River Trent in Winthorpe, Nottinghamshire, which is the third-longest river in England, at 185 miles. It is a reinforced-concrete bridge made out of nine box girders.