Originally, first- and second-class roads in the Republic of Ireland were classified as Trunk and Link roads.
| Old number
|
Start
|
End
|
Via
|
N and R number(s)*
|
| T1
|
Dublin
|
Dundalk and border (A1)
|
Drogheda
|
N1
|
| T2
|
Dublin
|
Monaghan and border (A5)
|
Slane, Ardee
|
N2
|
| T3
|
Dublin
|
Sligo
|
Mullingar, Longford
|
N4
|
| T4
|
Kinnegad
|
Galway
|
Athlone, Ballinasloe, Athenry
|
N6, R348
|
| T4A
|
Ballinasloe
|
Loughrea
|
|
N6
|
| T5
|
Dublin
|
Limerick
|
Kildare, Portlaoise, Roscrea
|
N7
|
| T6
|
Naas
|
Cork
|
Kilkenny, Clonmel
|
N9, N78, N77, N76, N24, N8
|
| T7
|
Dublin
|
Waterford
|
Arklow, Enniscorthy, New Ross
|
N11, R752, R747, N11, N79, N25
|
| T8
|
Enniscorthy
|
Rosslare Harbour
|
Wexford
|
N11, N25
|
| T9
|
Dundalk
|
Cahir
|
Kells, Mullingar, Tullamore, Roscrea, Thurles, Cashel
|
N52, R421, N62, R660, N8
|
| T10
|
Mullingar
|
Cavan and border (A3)
|
|
R394, N55, N3, N54
|
| T11
|
Cork
|
Sligo
|
Limerick, Ennis, Galway
|
N20, N18, N6, N17, N83, N4
|
| T11A
|
Dunmore
|
Ballymoe
|
|
R360
|
| T12
|
Cork
|
Wexford
|
Waterford
|
N25
|
| T12A
|
Cobh Cross
|
Cobh
|
|
R624
|
| T13
|
Limerick
|
Waterford
|
Clonmel
|
N24
|
| T14
|
Waterford
|
Tullamore
|
Kilkenny, Portlaoise
|
N9, N10, N77, R342, R340, N8, N80
|
| T15
|
Galway
|
Monaghan and border (A3)
|
Roscommon, Longford, Cavan, Clones
|
N17, N63, R194, N55, N3, N54, N12
|
| T16
|
Enniscorthy
|
Portlaoise
|
Carlow
|
N80
|
| T17
|
Sligo
|
border (A4)
|
Manorhamilton
|
N16
|
| T18
|
Sligo
|
border (unclassified to B85 at Clody)
|
Donegal
|
N15
|
| T19
|
Kilkenny
|
Limerick
|
Urlingford, Thurles
|
R693, N8, N75, R498, R503, N7
|
| T20
|
Kilkenny
|
New Ross
|
|
R700
|
| T21
|
Thurles
|
Galway
|
Nenagh, Portumna, Loughrea
|
R498, N65, N6
|
| T21A
|
Borrisokane
|
Moneygall
|
|
R490
|
| T22
|
Dundalk
|
Castleblaney
|
Cullaville (NI)
|
N53
|
| T23
|
Dundalk
|
border (A29)
|
|
R177
|
| T24
|
Dundalk
|
Granard
|
Carrickmacross, Virginia
|
R178, R194
|
| T25
|
Drogheda
|
Collon
|
|
R168
|
| T26
|
Drogheda
|
Kinnegad
|
Navan, Trim
|
N51, R161
|
| T27
|
Kinsalebeg
|
Clonmel
|
|
R671
|
| T28
|
Patrickswell
|
Tralee
|
|
N21
|
| T28A
|
Castleisland
|
Farranfore
|
|
N23
|
| T29
|
Tralee
|
Cork
|
Killarney, Macroom
|
N21, N22, R618
|
| T30
|
Joulterspark
|
Killarney
|
Lismore, Fermoy, Mallow
|
N72
|
| T31
|
Portumna
|
Granard
|
Ballinasloe, Athlone
|
R355, N6, N55
|
| T32
|
Roscrea
|
Athlone
|
Birr
|
N62
|
| T33
|
Birr
|
Borrisokane
|
|
N52
|
| T34
|
Athlone
|
Boyle
|
Roscommon
|
N61
|
| T35
|
Dublin
|
Laghy
|
Navan, Cavan, Newtownbutler (NI), Enniskillen (NI), Irvinestown (NI)
|
N3, N54, R232
|
| T36
|
Abbeyleix
|
Listowel
|
Urlingford, Cashel, Tipperary, Kilmallock, Charleville, Newcastle West
|
N8, N74, R515. R522, N21. R555
|
| T37
|
Cashel
|
nr Kilkenny (T6)
|
Dually, Ballinure, Killenaule, Ballingarry
|
R691
|
| T38
|
Mitchelstown
|
Mallow
|
Kildorrery
|
N73
|
| T39
|
Roscommon
|
Louisburgh
|
Ballymoe, Castlerea, Ballyhaunis, Claremorris, Castlebar, Westport
|
N60, R335
|
| T40
|
Ballysodar (nr Sligo)
|
Galway
|
Inishcrone, Ballina, Foxford, Castlebar, Ballinrobe, Headford
|
N59, R297, N59, N57, N58, N5, N84
|
| T41
|
Enfield
|
Kilrush
|
Edenderry, Daingean, Ballinagar, Tullamore, Birr, Portumna, Scariff, Ennis
|
R402, Local road (Ballinagar-Tullamore), N52, R489, N65, R352, N68
|
| T42
|
Dublin
|
Clash (T16)
|
Tallaght-Blessington-Baltinglass-Tullow
|
N81
|
| T43
|
Dublin
|
(Bray)
|
Sandyford--Kiltiernan-Enniskerry
|
R117
|
| T44
|
Dublin
|
nr Shankill (T7)
|
Blackrock-Dun Laoghaire-Dalkey-Killiney
|
R118, N31, R119
|
| T45
|
Clones
|
border (to Newtownhamilton & Newry via A25)
|
Killeevan-Newbliss-Ballybay-Castleblayney
|
R183, R182
|
| T46
|
Carrickmacross
|
Ballybay
|
|
R180
|
| T47
|
Tullamore
|
Moate (T4)
|
Clara
|
N80
|
| T48
|
Durrow
|
nr Borris-in-Ossory (T5)
|
Ballycolla-Aghaboe
|
R434
|
| T49
|
Cashel
|
Clonmel
|
Rosegreen-Ballyclerahan
|
R688
|
| T50
|
Mitchelstown
|
nr Limerick (T13)
|
Ballylanders-Hospital-Herbertstown-Caherconlish
|
R513
|
| T50A
|
Kilmallock
|
nr Limerick (T57)
|
Bruff
|
R512
|
| T51
|
Kilcullen
|
Kilkenny
|
Castledermot-Carlow-Paulstown
|
N9, N10
|
| T52
|
nr Drumsna (T3)
|
Gannons Cross (T10/T35)
|
Mohill-Carrigallen-Killeshandra-Belturbet
|
R201, R200, N3, R197
|
| T53
|
Dromod
|
border near Swanlinbar (A32)
|
Mohill-Ballinamore-Gortmore-Swanlinbar
|
R202
|
| T54
|
Carrick-on-Shannon
|
Bundoran
|
Drumshanbo-Mountallen-Manorhamilton
|
R280, R207, R208, R280
|
| T55
|
nr Carrick-on-Shannon (T54)
|
Fenagh (T53)
|
Keshcarrigan
|
R209
|
| T56
|
Carrick-on-Suir
|
T6 near Carrick-on-Suir
|
|
R696
|
| T57
|
Limerick
|
Emly (T36)
|
Ballyneety-Longford Bridge-Herbertstown-Hospital
|
R512, R514, R513, R516
|
| T58
|
Ballina
|
Belmullet
|
Crossmolina-Bangor Erris
|
N59, R313
|
| T59
|
Stranorlar
|
border near Derry (A2
|
Letterkenny-Newtown Cunningham-Bridge End
|
N56, N13
|
| T60
|
nr Letterkenny
|
border near Strabane (A38)
|
Lifford
|
N14
|
| T61
|
nr Bray (T7)
|
Rathdrum
|
Roundwood-Laragh
|
R755
|
| T62
|
nr Dundalk (T1)
|
border near Newry (B79)
|
The Bush-Carlingford-Omeath
|
R173 (Cooley Peninsula drive)
|
| T63
|
Waterford
|
Dungarvan
|
Tramore-Annestown-Bunmahon-Stradbally
|
R675, Local routes (Bunmahon-Ballyvoile), R675
|
| T64
|
Macroom
|
nr Bantry (T65)
|
Inchigeelagh-Ballingeary-Kealkill
|
R584
|
| T65
|
Killarney
|
Cork
|
Kenmare-Glengarriff-Bantry-Drimoleague-Dunmanway-Bandon
|
N71, R586, N71
|
| T66
|
Tralee
|
Kenmare
|
Castlemaine-Killorglin-Cahirsiveen-Waterville-Sneem
|
N70
|
| T67
|
Killorglin
|
Killarney
|
|
N72
|
| T68
|
Limerick
|
Dingle
|
Askeaton-Foynes-Tarbert-Listowel-Tralee-Annascaul
|
N69, whatever is now N86
|
| T69
|
Kilcolgan (T11)
|
Kilrush
|
Kinvara-Ballyvaughan-Lisdoonvarna-Ennistymon-Lahinch-Miltown Malbay-Kilkee
|
N67
|
| T70
|
Ennistymon
|
Ennis
|
|
whatever is now N85
|
| T71
|
Galway
|
Bangor Erris
|
Oughterard-Clifden-Leenane-Westport-Newport
|
N59
|
| T72
|
Donegal
|
Letterkenny
|
Ardara-Glenties-Dungloe-Burtonport-Crolly-Brinlack-Falcarragh-Dunfanaghy-Carrickart-Milford-Rathmelton
|
N56, R259, R257, R245
|
| T72A
|
T72 near Killybegs
|
Malin More
|
Killybegs
|
R263
|
| T73
|
Speenoge (T74)
|
border near Muff (A2
|
Burnfoot-Buncrana-Ballyliffen-Carndonagh-Gleneely-Moville
|
R238, R244, R238
|
| T74
|
Letterkenny
|
nr Derry
|
Newtown Cunningham
|
N13
|
| T75
|
nr Dungarvan (T30)
|
nr Clonmel (T27)
|
Ballymacmague South-Halfway House Inn
|
R672
|
| T76
|
Borrisoleigh
|
Templemore
|
|
R501
|
| T77
|
Longford
|
Foxford
|
Ballaghderreen-Charlestown-Swinford
|
N5, N26
|
[*] As at the date of changeover from Trunk and Link classification to National and Regional classification.
