river river river lower reaches running curving route anti clockwise west northern england improvements river authorised work included locks completed unusual clause enabling act parliament stipulated profits given improvement roads bridges navigation initially profitable payments trade continued rise given county major trade salt arrival detrimental salt trade ultimately beneficial salt tipped canal barges river navigation access river improved provided link boats reach states tide water deeper navigation completely reconstructed original locks replaced larger locks capable handling coasters opening new lock constructed marsh gave direct access ship canal having pass docks point water river entered canal nearby surplus released located upstream junction notable feature boat lift near links trent canal feet opened allow canal boats reach closed safety grounds refurbished reopened structures navigation historical importance grade listed include swing bridge bridge believed earliest swing bridges powered electricity immersed river carries cent weight bridge carries stream earliest surviving timber structures railway built grade listed civic celebration held completion deaths injuries workers construction route slightly miles long source hills west near castle initially flows south easterly direction border fed tributaries rise north canal crossings occurs village crosses course flowing village passes west village starts flow approximately northwards shortly carried moss hall significant town river market town early 19th century stone bridge single span crosses river continuing northwards passes village carrying canal designed built brick stone bands river flows central arch flood relief arches channel waterways run roughly parallel miles near current head navigation river turns flow north west north course river altered times construction cuts locks enable small ships trade river joined marsh construction begun flowed canal surplus water enters upstream junction tidal river section bypassed longer derelict history river runs salt producing area deep allow boats reach salt mines tidal miles wharf salt mines carried pack horse wharf loaded barges tide carry river early 17th century coal transported area industry expanded calls improve river trade opposition initial schemes landowners feared flooding carriers feared loss trade resulted bills laid parliament defeated construction act parliament improvements river obtained gentlemen act dated march authorised work bridge bridge rates tolls set reduced cent cost construction met profits maintain bridges highways year justices peace meet decide structures benefit source revenue act included powers improve bridge following plea owner workings near felt new navigation separate act obtained june improvements result work undertaken progress slow original actively engaged project reach agreement commissioners stalemate broken died new appointed work completed cost timber locks constructed work carried river improved construction series cuts locks manage drop feet miles barges tons reach boats called flats predominant vessels sailed river bow hauled teams men navigation initially profitable money owing gradually rose peak toll receipts improved debts reduced september merchants liverpool complained run state navigation offered pay survey merchants offered navigation commissioners wanted control paid outstanding debt bought navigation rights deal completed october commissioners largely ignored survey carried decided locks feet wide work began new cut lock navigation cut half collapse salt pit commissioners discovered sue damages provisions act longer covered way operating second act parliament obtained changed way debts managed gave commissioners powers sue appoint management committee stipulated locks feet draught feet actual depth exceeded feet debts continued increase commissioners borrowed money fund improvements new lock failed rebuilt work started plans revised increase depth feet work completed development proposed trent seen threat trustees navigation ran parallel distance near commissioners pressed upgrading river completing new locks bridge set debts july resulting profits given stated original act trent completed immediate effect trade dropped cent particularly area short lived salt trade developed figures reaching levels climbing cent tons ultimately trent generated significant trade navigation system constructed enable salt narrow boats canal tipped flats moored dock feet level canal steady increase traffic encouraged trustees press improvements widened lock raised caused salt mining resulted new lock needed longer term solution provided decision lock new site town work finished lock longer necessary removed new cuts locks built royal hunts lock removed response petitions construction path suitable horses started completed far later extended bow hauling boats men ended canal barges carrying salt negotiate tidal section river reach cargo taken liverpool manchester distribution worldwide water levels inadequate tides resulting having wait days users navigation suggested extended water deeper trustees wanted pay extension raising tolls users objected took years work deal suited parties finally trustees obtained act august authorised construction cut trustees insisted engineer oversee work project large ran time budget sacked serving navigation years asked complete work managed project engineer new lock connected cut basin tide gates connect basin cut called canal completed fourth act obtained altered details previous act act noted canal completed stated trustees built basin piers lighthouse point canal officially branch trustees additional charges section tolls collected construction costs progress trustees investigated idea junction canal branch felt water supply problem new cuts constructed planned construct second lock original locks asked advice river adapted ships said think cost effective work started making river feet deep building double locks suitable ton vessels feet hunts locks improved trade good tolls generating carriage tons goods improvements funded toll revenue given line original act improvements river suitable coasters began appointed engineer oversaw complete reconstruction navigation programme designed ensure river remained attractive carriers ensured locks 1830s replaced larger locks bridges replaced swing bridges enabled coasters tons use river construction connection river trent begun completed difference level vertical boat lift designed tanks linked hydraulic system descending tank caused hydraulic fluid enter raised tank design success fluid contaminated resulting lift replaced new design tank attached weight wire ropes small electric motors overcome friction new lift built old continue new ready work carried staff navigation supervised engineer completed continued use closed safety grounds expected use transfer salt canal river cease lift opened turn 19th century tons cargo lift year tons salt transferred middle 19th century salt traffic transferred railways use pumped affected trade source revenue declined chemical industry developed area major source income navigation locks locks river paired lock chambers cases larger lock intermediate gates ships varying length accommodated waste water maximum size locks feet boat lift feet lock slightly narrower feet boat lift designed canal craft ships hold vessels feet draught feet connections access navigation improved traditional canal boats opening completed canal left canal provided link near flights locks connected canal link severed road bridge constructed half filled time significant change occurred opened tidal section river flowed ship canal exit lock joined canal estuary new ship lock constructed marsh provided convenient route ship canal alternative route docks little possible pleasure craft reach ship canal commercial leisure users requirements operating company situated normal route leisure boats reach river following closure trust created campaign restoration lift scheduled ancient monument work eventually started refurbishment reopened powered use modern hydraulic expected prevent problem suffered originally built navigation managed british waterways far shallow lakes resulting underlying salt mines possible canal boats explore flash depth water limited great care needed flash yacht racing based acre lake tourism river contrasts quiet wooded reaches heavily sites commercial shipping largely ceased ship sized locks remain leisure bridges provide clearance feet swing bridge royal cut feet boats require bridges opened prior notice salt museum renamed reflect expanding scope historic building housed visitor centre lift popular non alike facilities recreational rowing popular competitive clubs fishing takes place river clubs lease fishing rights different parts river holds populations types perch pike fishing matches regularly organised weekends lower reaches railway manchester ship canal sailing based uses mile stretch river activities include youth training racing types training courses structures navigation number structures age historic value listed listed building register royal lock built retained channel new lock built 1890s swing bridge crosses chamber upstream end supported cast iron arches piers swing bridge wood iron crosses small lock large lock construction new large lock 1890s sets gates accommodate train barges outer gates swing bridge crosses lock gates opened water turbine mechanism features include water mechanism system removing rubbish gates jets water controlled lock keeper cottage grade listed built 1850s moved northwards yards reconstruction locks arched red sandstone constructed crosses valley built carried grand junction railway hunt locks consist pair smaller 1860s larger sets gates 1890s steel signals control access locks movement gates employs turbine east locks walkway supported piers cast iron arches support structure baroque style railway spans lock cut stream built 1860s consists round arches constructed blue bricks red sandstone iron spans channels yards long provides feet navigation crosses river swing bridge carries road navigation manufactured derby london bridge timber framed control cabin listed town bridge located little downstream similar design believed earliest swing bridges britain powered electricity bridges designed navigation engineer incorporate immersed river carries cent weight bridge risk salt workings bridges fitted screw allow deck level maintained bridge refurbished cost million bridge downstream built replace bridge built original design flawed bridge replaced years pedestrian walkway later fitted downstream new bridge locks built red sandstone limestone replaced lock built cut turbines control gates built patent carry plates indicate manufactured symmetrical swing bridge built island centre river swung channel august designer locks similar design age turbines described turbine makers cast iron covers yards north east lock built 1870s similar baroque style hunt larger arches carrying gate stream main channel carried designed navigation engineer erected earliest surviving timber structures consists arches feet long locks built grand junction railway completed grade listed arches built cost london civil engineering contractor called civic celebration held completion deaths injuries workers construction navigation routed passes different arch structure built altered subsequently main curved section yards wide foot southern end adjacent lock designed modified later traffic cut time 1890s upgrade retained original features derelict water flow controlled concrete steel erected mid 20th century red sandstone limestone bridge carries road channel lock built yard arches crosses main channel swing bridge built 1920s problems stability road surface options secure long term future appearance discussed completed built brown bricks cast iron central arch built contractor engineer project oxygen levels august oxygen levels river found low following death thousands fish environment agency notified water investigated cause problem thought result naturally occurring algae oxygen fish depend affected reaction hydrogen improve oxygen levels water traces reaction results unpleasant looking foam building surface foam hazardous use river fishing believe years restore species fish affected incident points interest
River Weaver