Layerthorpe Pedestrian bridge from Foss Islands Road to what is now the Defra site at Peasholme Green (1931) Hungate Bridge (2011) cycle path and pedestrian bridge north of Rowntree Wharf linking Navigation Road with the Hungate area and Peasholme Green Pedestrian bridge linking the Shambles car-park and Rowntree Wharf () Foss Bridge (1811–12) Piccadilly Bridge (1911–14) Castle Mills Bridge (1956), part of York's Inner Ring Road The Blue Bridge (1929–30) Many of these are unobtrusive modern bridges carrying main roads. The following are more notable: Monk Bridge (1794) Monk Bridge is a single-arched ashlar bridge with a span of approximately . It carries traffic between central York and Heworth and was built in 1794 to designs by Peter Atkinson the elder. In 1924–6, the bridge was widened and the upper part rebuilt. Pedestrian bridge from Foss Island Road to Defra site (1931) This cast-iron pedestrian bridge from Foss Islands Road to what is now the Defra site at Peasholme Green was constructed in 1931 by the Monk Bridge Construction Company to improve communications between York's power station and its cooling tower, both now demolished. It is locked and not in use. Hungate Bridge (2011) Opened in September 2011, Hungate bridge is a cable-stayed cycle and foot bridge that links Navigation Road and Palmer Street. It has an span with a single supporting mast on the north bank. National Cycle Network Route 658 uses the bridge. It is also on the route of the Way of the Roses coast to coast route and is part of York's network of traffic-free cycleways. Foss Bridge (1812) The Foss Bridge, a single Georgian gritstone arch with balusters, links the streets Fossgate and Walmgate. It is believed that the earliest bridge on this site was constructed during the Viking period. The present bridge, designed by Peter Atkinson the younger and erected in 1811–12, replaced a wooden bridge. The bridge was once the site of a fish market. It is a Grade II* listed building. The Blue Bridge (1930) The Blue Bridge crosses the River Foss just above its confluence with the River Ouse. The original bridge on the site was built in 1738, the current one being constructed in 1929–30. In the early 1730s a section of the eastern river bank of the Ouse was improved, at the expense of the city, to create an area lined with trees along which the citizens could promenade.