Editing Barnes, London (section)

=== Road ===
Barnes has two [[Thames crossings|River Thames crossings]], neither of which is a working road bridge. [[Barnes Railway Bridge]] is a railway bridge with an adjacent footpath. [[Hammersmith Bridge]] is a [[suspension bridge]] to the north of Barnes, built in 1887. Since 2019, it has been closed indefinitely to all motor traffic due to structural faults. This affects residents of Barnes who previously relied on the crossing.

Many of the roads in Barnes are residential, but several [[Arterial road|arterial routes]] pass through the district, carrying traffic across London and [[South East England]].

The [[South Circular Road, London|South Circular Road]] (A205) passes through the southern end of Barnes. It carries traffic eastbound towards [[Wandsworth]], [[Clapham]], [[City of London|the City of London]] and [[South East (London sub region)|south east London]]. Westbound, the road carries traffic away from Central London, either towards [[Richmond, London|Richmond]] and [[M3 motorway (Great Britain)|the M3]], or directly to [[M4 motorway|the M4]] and the [[North Circular Road, London|North Circular Road (A406)]]. [[Kew]] and [[Chiswick]] are ''en route'' to the M4. The [[A306 road|A306]] runs north–south through Barnes, carried by [[Castelnau, London|Castelnau]] and Rocks Lane. Leaving Barnes to the north, the A306 crosses Hammersmith Bridge towards [[Hammersmith]], where traffic meets the [[Great West Road, London, England|Great West Road (A4)]], which links to [[Earl's Court]] and [[West End of London|the West End]]. Southbound, the A306 eventually meets [[A3 road|the A3]] towards [[Guildford]] and [[Portsmouth]]. [[Transport for London|Transport for London (TfL)]] manages the South Circular Road and the A306 (south of Barnes only).<ref>{{Cite web|url=http://content.tfl.gov.uk/tfl-base-map-master.pdf|title=TfL Base Map|website=[[Transport for London]] (TfL)|archive-url=https://web.archive.org/web/20190407204454/http://content.tfl.gov.uk/tfl-base-map-master.pdf|archive-date=7 April 2019}}</ref>

[[Barnes High Street]] and [[Church Road, Barnes|Church Road]] carry the [[A roads in Zone 3 of the Great Britain numbering scheme|A3003]], which runs between Barnes and nearby [[Mortlake]].

Other roads which cross the Thames nearby are [[Chiswick Bridge]] ([[A316 road|A316]]) to the west and [[Putney Bridge]] ([[A219 road|A219]]) to the east.

==== Air pollution ====
The London Borough of Richmond upon Thames carries out air pollution monitoring in Barnes, both kerbside and in the [[London Wetlands Centre]]. There are several sites in Barnes which measure the concentration of [[nitrogen dioxide]] ({{chem|NO|2}}) and [[Particulate Matter|particulate matter PM<sub>10</sub>]] in the air.

A kerbsite site along Castelnau (a main road whose traffic level has greatly reduced due to the bridge closure) recorded an annual mean concentration of {{chem|NO|2}} at 31 μg.m<sup>−3</sup> (micrograms per cubic metre) in 2017. The annual mean concentration of PM<sub>10</sub> was 18 μg.m<sup>−3</sup> at the same site in the same year. Both results show that Barnes' air is the cleanest it has been since 2011, at least. The Wetlands monitoring site recorded far lower (i.e. cleaner) results than Castelnau did in 2017, with an annual mean {{chem|NO|2}} concentration at 21 μg.m<sup>−3</sup>, and a mean reading of 15 μg.m<sup>−3</sup> for PM<sub>10</sub>. A monitoring site on Barnes High Street recorded more polluted air than the other, with {{chem|NO|2}} levels at 43.0 μg.m<sup>−3</sup> (annual mean, 2017). This site therefore failed to meet the UK National Air Quality Objective of 40 μg m<sup>−3</sup> (annual mean) for {{chem|NO|2}}.<ref>{{Cite web|url=https://www.richmond.gov.uk/media/15932/air_quality_annual_status_report_2018.pdf|title=London Borough of Richmond upon Thames: Air Quality Annual Status Report for 2017|date=30 May 2018|website=[[London Borough of Richmond upon Thames]]|archive-url=https://web.archive.org/web/20190413014052/https://www.richmond.gov.uk/media/15932/air_quality_annual_status_report_2018.pdf|archive-date=13 April 2019}}</ref>