Details
The N21 route commences about 8 km (5.0 mi) southwest of Limerick city, just beyond Patrickswell. At the junction, which is reached by the main M20 motorway, the M/N20 diverges south to Cork and the main dual-carriageway becomes the N21 west.
Prior to the 2001 opening the new dual-carriageway, traffic to Kerry left the city on the old N20 in a southwest direction on the Ballinacurra Road through Raheen and then went through Patrickswell to the beginning of the N21.
The new 11 km (6.8 mi) M20/N21 dual-carriageway route begins at junction 1 on the Rosbrien Interchange as the M20 where it leaves the M7/N18 Limerick Southern Ring Road, and bypasses the Limerick suburbs of Dooradoyle, Raheen and Patrickswell, and continues, as the N21, almost to Adare. At this point the N21 becomes a standard two-lane road and flows through the main street of the scenic village.
The N21 then runs by Croagh and Rathkeale, which were both bypassed in 1990, before entering Newcastle West and filtering through the town. Further along the route the N21 passes through Templeglantine, before going through the major town of Abbeyfeale.
The road continues southwest, at the townland of Kilkinlea it crosses over the River Feale into County Kerry passing by Knocknagoshel and heading towards Castleisland. A new 7 km (4.3 mi) roadway from Abbeyfeale to Knocknagoshel, bypassing the accident-prone Headleys bridge near Knocknagoshel opened in July 2006. The remainder of the road to Castleisland was realigned in the 1980s. A 6 km (3.7 mi) section north of Casleisland was overlayed and brought up to standard in 1999.
At Castleisland, the N21 heads west to Tralee. The short N23 continues southwest to Farranfore, allowing traffic to continue south along the N22 to Killarney. A new 11 km (6.8 mi) road from Castleisland to Ballycarty near Tralee was opened in early 2001. This was followed by a new 3 km (1.9 mi) section into Tralee, opened in April 2005.
Read more about this topic: N21 Road (Ireland)
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