I returned to Boston on Tuesday night from an icy start in Illinois on Monday to an icy finish in Boston as slush and water, which I guess fell as our first real snow of December 2015, on streets and sidewalks turned to solid ice. I cleared the ice to my back door so I could unload my car, because the front walk was intractably ice-covered. It got colder overnight, but the streets and trails were mostly clear in the morning. It didn't warm up as much as it was supposed to today, so these conditions should hold till mid-day Thursday when everything should melt.

Please send updates and reports on the conditions of other paths in Massachusetts to Jessica Mink.

Arnold Arboretum 1.5 miles of park roads which are mostly closed to automobile traffic with no intersections Boston Parks and Harvard University	Not checked yet, but probably a bit icy.
Blackwell Footpath A half-mile gravel path connecting the Forest Hills MBTA station and the South St. Arboretum entrance Boston Parks and Harvard University	Not checked yet, but probably close to impassable on a bike.
Roslindale Bike Lanes Two miles of bike lanes on both sides of Washington St. from Forest Hills to Roslindale Square and to West Roxbury on Belgrade Ave. and buffered and wide bike lanes along American Legion Highway Boston Public Works Department	Not checked yet.
Centre St. and VFW Parkway Bike Lanes DCR, plowed by MassDOT	Not checked, but probably fairly clear.
Arborway "Bike Lanes" 1 mile of wide paved shoulder which is unmarked but usually clear of parked cars during rush hour Department of Conservation and Recreation	Not checked yet.
Morton St. Buffered Bike Lanes Cemetery Rd. to Harvard St. MassDOT	The bike lanes are about half clear, and sometimes clearer. With the buffer, that makes them pretty usable.
Franklin Park Roads Much of the park loop road is closed to motorized traffic and there are bike lanes on the main road. Boston Parks and Public Works Departments	Not checked yet.
Centre/South Bike Lanes A mile of bike lanes through the heart of Jamaica Plain from Jackson Square and the Southwest Corridor to Forest Hills Boston Public Works Department	Not checked yet.
Jamaicaway Bikepath 1.5 miles of mostly bike/ped-separated paths paralleling a busy 4-lane parkway; two intersections with traffic lights Boston Parks Deparment	Plowed to bare pavement, the path is in pretty good shape except right at the intersections and at the bottom of the hill south of Willow Pond Ave., where the plow went off the pavement and made a deep hole which will be tricky to avoid in the dark.
Perkins St. Bike Lanes 1.5 miles of mostly bike/ped-separated paths paralleling a busy 4-lane parkway; two intersections with traffic lights Department of Conservation and Recreation	Not checked yet.
Olmsted Park Paths 3/4-mile of mostly bike/ped-separated paths built over Riverdale Road, across Leverett Pond from the Jamaicaway. Brookline Park Department	The path looked well-plowed from Route 9 south.
Parkway and Netherlands Rd. Contraflow bike lanes Two one-block contra-flow lanes plus and contraflow cycle track Brookline Park Department and DPW	Three-quarters of the width of the contraflow lane on the street is clear; the contraflow cycle track is not very passable.
Muddy River Path 12-foot-wide 0.6 mile shared bike/ped path with no intersections Brookline Park Department and DPW	Pretty clear, with occasional bits of slush/ice
Commonwealth Ave. Bike Lanes Connecting the B.U. Bridge to Boston University Boston Transportation Department	Pretty clear, at least near the BU Bridge.
Brookline Bike Lanes Town of Brookline	Not checked yet
B. U. Bridge Bike Lanes Boston to Cambridge Department of Conservation and Recreation, Plowed By Mass. Highway Department	Pretty clear
B. U. Bridge west sidewalk Boston to Cambridge Department of Conservation and Recreation, Plowed By Mass. Highway Department or B.U.	Both sidewalks were cleared to bare pavement.
Harvard (Mass. Ave.) Bridge bike lanes Cambridge to Boston Department of Conservation and Recreation, Plowed By Mass. Highway Department	Not checked yet.
Longfellow Bridge bike lanes Cambridge to Boston Department of Conservation and Recreation, Plowed By Mass. Highway Department	Bruce Kulik reports: Generally clear. Inner most foot next to MBTA fence and left most foot next to sidewalk not cleared. DOT and/or contractor should be sure to clear entire pavement width curb to curb on the bridge.
Charles River Bikepaths Narrow, shared bike-ped path with few intersections Department of Conservation and Recreation	The path upstream from the BU Bridge to the Weeks Footbridge was mostly clear, but there were a few bad spots, especially around the Riverside Boat Club, where now that the eternal puddle is filled, the plow had to create something worse.
J.F.K. Park Wide, shared bike-ped path from river to Harvard Square Department of Conservation and Recreation	Not checked yet.
Western Ave. Cycletrack Cambridge Cambridge DPW	Not checked yet.
Western Ave. Cycletrack Boston Boston DPW	Not checked yet.
N. Harvard St. bike lanes Boston Boston DPW	Not checked yet.
Lincoln St. to Cambridge St. MassPike Bridge Bike/Ped connection from Harvard Square to Allston's Harvard Ave. district via Franklin St. Massachusetts Turnpike Authority	Not checked yet, but probably plowed.
Southwest Corridor Bikepath Separated Bike/Ped path with poorly-designed intersections Department of Conservation and Recreation	From Forest Hills to Green St., it's plowed to bare pavement, but a bit slushy at intersections.
South Bay Harbor Trail Bike/Ped path from the Federal Court House up Fort Point Channel to the Southwest Corridor City of Boston	Not checked yet.
Neponset Trail Mostly paved Bike/Ped path Department of Conservation and Recreation	Not checked yet.
Somerville Community Path Wide rail trail from Davis Square to Cedar St. City of Somerville	Not checked, but probably bikeable.
Red Line Linear Park Path Alewife MBTA station to Davis Square over Red Line City of Cambridge City of Somerville	Not checked, but probably fairly clear.
Danehy Park Paths City of Cambridge	Not checked yet, but probably fairly clear.
Cambridge Bike Lanes Striped lanes of varying widths on major and connecting streets City of Cambridge	Bruce Kulik reports:On Beacon/Hampshire, some clear areas, but bike lane is at least 1/2 covered by snow and ice in many areas requiring travel in adjacent general traffic lane.
Vassar St. Cycle Track Buffered bike lanes from Main St. to Memorial Drive (almost) City of Cambridge	Not checked.
Green St./Franklin St. Bicycle Boulevard Narrow one-way streets parallel to Mass. Ave. from Central Square to< Harvard Square/I> City of Cambridge	Not checked yet.
Fresh Pond Bike Path Parallel to Fresh Pond Parkway in Kingsley Park City of Cambridge	Not checked yet.
Alewife Brook Trail DCR	Boardwalk sections aren't plowed. No report on the rest.
Fitchburg Cutoff Trail DCR	Not checked yet.
Concord Ave. Cycle Track Buffered bike lanes from Belmont to Fresh Pond Parkway City of Cambridge	Not checked yet.
Alewife Parkway Bridge Sidewalk Connection from Minuteman Bikepath to Fresh Pond and beyond Department of Conservation and Recreation	Not checked yet.
Minuteman "Commuter Bikeway" Towns of Cambridge, Arlington, Lexington, and Bedford	No report yet.
Upper Charles Reservation Watertown, Newton, Waltham 4+ miles of paved and unpaved bikepaths Mass. Department of Conservation and Recreation	Not checked yet
Newton Bike Lanes City of Newton	Not checked yet.
Revere Beach Reservation Revere Shared use paths (or very wide sidewalks) Mass. Department of Conservation and Recreation	Not checked yet.
Northern Strand Community Trail Everett and Malden Shared use path Everett and Malden DPW	No Report.
Stony Brook Reservation Hyde Park 4+ miles of paved bikepaths Mass. Department of Conservation and Recreation	These paths aren't plowed because they get relatively little transportation use and because they are used by cross-country skiers like me. There are marked narrow bike lanes on Enneking Parkway through the reservation which are probably clear. Though after this snowfall, the paths should be pretty bikable, and there usually isn't any ice.
Former Metropolitan State Hospital Belmont, Waltham paved bikepaths Mass. Department of Conservation and Recreation	Not checked yet.
Assabet River Rail Trail Hudson and Marlborough, so far Town of Hudson, City of Marlborough (so far)	Not checked, but probably not plowed.
Northampton Bikeway East-west across the City of Northampton City of Northampton	Craig Della Penna, who lives next to the path, has reported that it is the intention of the DPW to make it passable ASAP after a storm. If the storm is significant, then they plow it repeatedly --sometimes 10-12 times during the course of the storm to ensure its usability.
Norwottuck Rail Trail Northampton to Amherst Department of Conservation and Recreation	No report.