Complex sentence: The Limerick Tunnel is an 900m long, twin-bore, immersed tube road tunnel underneath the River Shannon on the western outskirts of Limerick City as part of phase 2 of the N7/N18 Limerick Southern Ring Road.
Split into simpler sentences: The Limerick Tunnel is an 900m long, twin-bore, immersed tube road tunnel underneath the River Shannon on the western outskirts of Limerick City. The tunnel forms part of phase 2 of the N7/N18 Limerick Southern Ring Road.