What is Windsor Railway Bridge?
{{Infobox_Bridge |bridge_name= Windsor Railway Bridge |image=Brunelwindsorbridge.jpg |caption=The wrought iron railway bridge<BR>downstream side, looking towards Windsor |official_name= |carries= 2 tracks of [[Slough]] to [[Windsor]] & [[Eton]] line |crosses=[[River Thames]] |locale= [[Windsor, Berkshire|Windsor]] |maint= |id= |design= [[Tied arch]] |designer =[[Isambard Kingdom Brunel|Brunel]] |material = [[Wrought iron]] |spans = 1 |pierswater = |mainspan= |length= |width= {{convert|202|ft|m}} <ref name=IoE>{{IoE|40391}} ''(Accessed 2008-09-16)'' </ref> |height={{convert|17|ft|9|in|m}} <ref>River Thames Alliance. [http://www.visitthames.co.uk/text.asp?PageId=320 Bridge heights on the River Thames.] {{Webarchive|url=https://web.archive.org/web/20080124114502/http://www.visitthames.co.uk/text.asp?PageId=320 |date=2008-01-24 }}</ref> |clearance= |below= |traffic= |open= 1849 <ref name=IoE/> |closed= |toll= |map_cue= |map_image= |map_text= |map_width= |coordinates= |lat= |long= }} '''Windsor Railway Bridge''' is a [[wrought iron]] 'tied [[arch]]' <ref >'tied arch' = so-called 'bow and string' bridge</ref> bridge in [[Windsor, Berkshire]]. It was designed by [[Isambard Kingdom Brunel]], and carried Brunel's [[Great Western Railway]] (GWR) [[branch line]] from [[Slough]] to [[Windsor, Berkshire|Windsor]] (Windsor and Eton Central station). It crosses the [[River Thames]] between [[Romney Lock]] and [[Boveney Lock]]. The bridge is a single-span structure with three bowstring trusses which created two bays for the original two GWR tracks. The bridge is the world's oldest [[wrought iron]] bridge still in regular service.<ref>{{Cite web |url=http://www.mybrunel.co.uk/bridges/windsor.php |title=Isambard Kingdom Brunel |access-date=2012-03-23 |archive-date=2014-01-20 |archive-url=https://web.archive.org/web/20140120074728/http://www.mybrunel.co.uk/bridges/windsor.php |url-status=dead }}</ref> It is a forerunner for Brunel's last masterpiece, the [[Royal Albert Bridge]], [[Saltash]].<ref name=IoE/> The bridge was [[li