Original sentence: As of 2005 this plan is contested because the route passes near the Hill of Tara and through the archaeologically rich Tara-Skyne valley.BBC News article.Following a major intersection with the M50 motorway, consisting of a busy (and often grid-locked) grade-separated roundabout, the road bypasses Blanchardstown and Mulhuddart with dual carriageway.From the outskirts of the city, the road passes by Clonee, Dunshaughlin, Navan and Kells in County Meath, before reaching Cavan Town.From there the route crosses the border with Northern Ireland, becoming the A509 to Enniskillen.NRA Project page for M3 Motorway.Objectors, including more than 200 academics and the head of the National Museum of Ireland, say the motorway will irreparably damage the region's heritage.On 12 May 2005 the route was approved by the Environment Minister Dick Roche subject to archaeological digs by Meath County Council.Part of the overall route is due to be bypassed, becoming the M3 motorway.Roads in Northern Ireland form part of an overall route connecting to Enniskillen, and northwest to the border again where the N3 reappears to serve Ballyshannon in County Donegal.The A49 road leads away from Enniskillen, becoming the N3 across the border, and connecting to Ballyshannon.The N3 road is a National Primary Route in the Republic of Ireland, running from Dublin to Cavan Town and the border area of Ireland.The National Roads Authority (NRA) and others (such as local business groups) insist that the longer route does not pass close enough to the towns in the area, and that the road is needed to address urgent traffic problems.The planned route corridor was approved by An Bord Pleanála (planning appeals board) in 2003, instead of a lengthier route that avoids the valley, preferred by an environmental impact assessment.The route is known as the Navan Road as it leaves Dublin, passing by the Phoenix Park's northeastern exit and Castleknock.They also point out that the new M3 motorway will be further away from the historic Hill of Tara than the existing N3 road.no:N3