Shannon Navigation Bridge Air Drafts

Information provided by Waterways Ireland

29th March 2025

Bridge Name Type Width (metres) Soffit (metres OD) Ordinary Summer Level (metres OD) Clearance / Air draft at OSL (metres) Remarks
Curlew Bypass Bridge Fixed N/A 44.20 4.00 Boyle water 
Knockvicar Bridge Fixed 9.24 42.98 4.68 Boyle water
Cootehall Bridge Fixed 9.14 42.98 4.78 Boyle water
Drumshanbo Bridge Fixed 8.38 48.16 4.62 Lough Allen Canal
Drumhauver Bridge Fixed 8.38 48.16 4.62 Lough Allen Canal
Drumleague Bridge Fixed 7.26 46.63 4.09 Lough Allen Canal
Battlebridge  Fixed 4.81 46.63 3.52
Leitrim Village Fixed 5.01 42.98 3.92 SEW
Hartley Bridge Fixed 9.14 42.98 4.90
Hartley Bridge 2023 Fixed 34.0 42.98 5.06
Carrick on Shannon Fixed 9.14 42.98 4.75
Ardanaffrin Bridge Fixed 9.14 42.98 5.56 Jamestown Canal
Corlara Bridge Fixed 9.14 42.98 5.70 Jamestown Canal
Lough Tap Railway Br Lifting 9.22 41.15 4.25
Carranadoe Bridge Fixed 9.14 41.15 3.93 Kilglass River
Roosky Bridge Lifting 9.09 41.15 6.15
Roosky Bridge Lifting 9.09 41.15 3.30 Bridge not lifted
Tarmonbarry Bridge Lifting 9.06 40.14 5.10
Cloondara Br  L1171 Fixed 6.05 40.14 3.50 Cloondara canal
Cloondara Bridge N5 Fixed N/A 40.14 3.20 Camlin River
Bord na Mona Bridge Fixed 7.67 37.49 5.18 Kilnacarrow
Lanesborough Bridge Fixed 12.09 37.49 5.25
Athlone Bypass Bridge Fixed N/A 37.49 5.15
Athlone Railway Br Fixed 12.92 37.49 6.36
Athlone town Bridge Fixed 12.80 37.49 5.29
Athlone Foot Br 2023 Fixed 30.0 37.49 5.48
Ballinasloe Motorway Fixed N/A 35.36 4.57
BnM bridge River Suck Fixed N/A 35.36 4.30 Airdraft gauge at Pollboy
Shannonbridge Fixed 12.49 35.36 7.18
Bord na Mona Bridge Fixed 12.80 35.36 6.82
Banagher Bridge Fixed 12.19 35.36 5.93
Portumna Bridge Swivel 12.09 33.38 1.82
Killaloe canal Bridge Fixed 4.90 33.38 3.37 Killaloe canal
Killaloe Road Bridge Fixed 9.14 33.38 3.85
Killaloe Bypass 2025 Fixed 25.00 33.38 6.14
Ship’s Pass Bridge Fixed 9.95 33.38 5.79
O’Briensbridge  Fixed 30.78 33.38 6.24 ESB Headrace
Clonlara Bridge Fixed 30.78 33.38 7.55 ESB Headrace
Blackwater Bridge Fixed 30.78 33.38 6.36 ESB Headrace
Parteen Bridge Fixed 32.99 Clearances given for 0.0m Height of tide.

HWOST – 5.43M

HWONT – 4.02M

 12.17 ESB Tailrace
Limerick Railway Br Fixed 24.86 8.52
O’Dwyer Bridge Fixed 10.05 8.96 Abbey River
Tidal Lock Bridge Fixed 7.83 8.91 Limerick Canal
Baal’s Bridge Fixed 18.26 7.78 Abbey River
Mathew Bridge Fixed 10.05 7.90 Abbey River
Sarsfield Bridge Fixed 11.73 7.84
Mallow Street Bridge Fixed 11.80 7.90

Ordinary Summer Level – Ordnance Datum Poolbeg