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Nova Scotia Highway 104

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Highway 104 in Nova Scotia runs from the New Brunswick border near Amherst to St. Peter's on Cape Breton Island. Except for the portion on Cape Breton, it is part of the Trans-Canada Highway.

The route is 320 kilometres (199 miles) long, of which the western 177 km (110 miles) is a 4-lane divided freeway. From Amherst, the highway runs east to Oxford, then southeast on a tolled section through the Cobequid Pass that opened in 1997. It meets Highway 102 near Truro then turns back northeast past Mount Thom to the New Glasgow and Stellarton areas.

East of New Glasgow, the highway becomes 2 lanes and undivided, and portions have no controlled access. There are traffic lights in the Antigonish area, although construction on a four-laned bypass is tentatively scheduled to begin in 2008. This bypass will keep traffic moving at 110 km/h (70 mph), and eliminate the various bottlenecks between Antigonish and Heatherton, including streches of road with a posted speed limit of 60 km/h (40 mph). Beginning at Heatherton (19 km to the east), Highway 104 is a "Super 2" (a two-lane controlled-access highway) to Aulds Cove, where several gas stations and motels are located. The highway then crosses the Canso Causeway to Cape Breton Island. The highway is unsigned as it follows Highway 4 through the town of Port Hawkesbury. From there, another 37 km (20 mile) "Super 2" segment follows the southern coast of Cape Breton Island to its end at Highway 4 in St. Peter's. An extension of Highway 104 to Sydney has been proposed in the past.

Highway 104 mostly supplanted the former route of Highway 4. In 1970, all sections of Highway 4 west of New Glasgow were renumbered, although the number was added back in the Mount Thom and Wentworth Valley areas in the 1990s when new divided segments of 104 opened to traffic.

The Nova Scotia provincial government has designated the entire length of Highway 104 from Amherst to St. Peters as a "strategic highway" to qualify for federal cost-sharing of maintenance and future upgrades. This designation has also been applied to the remaining Highway 4 corridor in Cape Breton along the south shore of Bras d'Or Lake from St. Peters to Sydney. It is eventually envisioned that the Trans-Canada Highway will follow the entire length of Highway 104 from Amherst to Sydney as a 4-lane freeway, upgraded from the existing Super 2 and uncontrolled access sections of the highway.

List of interchanges

Kilometre distances are approximate.

Mainland Section

Location Exit km Intersecting Roads Notes
Amherst 1 1 LaPlanche Street, Fort Lawrence Road
Amherst 2 2 Route 2
Amherst 3 5 Route 6 (Victoria Street)
Amherst 4 7 Route 2 (South Albion Street)
Springhill / Salt Springs Station 5 30 Highway 142
Oxford 6 40 Route 321
Thomson Station 7 49 Route 4 Former Highway 104 through Wentworth Valley; Cobequid Pass toll section begins
Westchester Valley 8 59 Wentworth-Collingwood Road
Great Village 10 83 Carrobie Road
Glenholme 11 89 Route 4 Cobequid Pass toll section ends
Masstown 12 93 Route 2
Lower Onslow / Debert 13 98 McElmon Road
Truro 15 107 Highway 102 only exit to Halifax
Valley 17 116 Route 4 (Pictou Road), Brookside Road
Kemptown 18 126 Stevens Cross Road
Mount Thom 18A 133 Route 4
Salt Springs 19 146 Route 4
Alma 20 155 Salter Road
Westville 21 159 Route 4 (Truro Road)
Mount William 22 161 Highway 106 To PEI Ferry
New Glasgow 23 164 Route 289 (Westville Road)
Stellarton 24 165 Route 374 (Foord Street)
Plymouth 25 167 Route 348 (East River Road)
Thorburn 26 170 Route 347 (Thorburn Road)
Sutherlands River 27A 178 Route 4 at-grade
Sutherlands River 27 179 Route 4, Route 245 (Shore Road) at-grade
French River 28 185 Route 4, French River Road at-grade
Barneys River 29 198 Route 4 at-grade
Marshy Hope 29A 204 Route 4 at-grade
James River 30 210 Beaver Mountain Road
Lower West River 31A 219 Route 4 at-grade
Antigonish 31 221 James Street at-grade
Antigonish 32 222 Route 7 (West Street) at-grade
Antigonish 33 223 Church Street at-grade
Greenwold 34 226 Route 4 at-grade
Lower South River 35 230 Route 316 at-grade
Heatherton 36 238 Summerside Road at-grade
Heatherton 36A 240 Route 4 at-grade
Monastery 37 252 Route 4
Havre Boucher 38 262 Frankville Road
Aulds Cove 39 270 Route 4 at-grade
Aulds Cove 40 271 Route 344

Cape Breton Section

Location Exit km Intersecting Roads Notes
Port Hawkesbury 43 283 Route 4
Lower River Inhabitants 44 293 Lower River Road, Port Malcolm Road at-grade
Evanston 45 295 Evanston Road, Whiteside Road at-grade
Louisdale 46 306 Route 320
River Bourgeois 47 316 Sporting Mountain Road