1) Full of melting snow 2) Half-melted 3) Like a warm day in winter 4) Like half-melted snow 5) Like many a winter road 6) Like many ski slopes in April 7) Like melting snow 8) Like mixed precipitation 9) Like some curbs in winter 10) Like some winter sidewalks 11) Like wet snow 12) Messy to walk in Found on https://www.crosswordclues.com/clue/slushy
Slush'y adjective Abounding in slush; characterized by soft mud or half-melted snow; as, the streets are slushy ; the snow is slushy . 'A dark, drizzling, slushy day.' Blackw. Mag. Found on http://www.encyclo.co.uk/webster/S/126