BusConnects Dublin

The National Transport Authority published the BusConnects Dublin programme, comprising a redesigned bus network and a Core Bus Corridor (CBC) infrastructure programme of 16 radial corridors (later consolidated to 12). Then-Minister for Transport Shane Ross attended the launch alongside NTA CEO Anne Graham.

The NTA opened the first non-statutory public consultation on draft designs for the 16 original Core Bus Corridors. The consultation ran into early 2019 and drew approximately 30,000 submissions — among the largest volumes of public feedback received on any Irish transport scheme.

Following the volume of feedback in the first consultation, the NTA published revised route designs reducing front-garden 'land take' on a number of corridors and reworking the corridor count from 16 to 12. A second non-statutory public consultation opened on the revised designs.

The NTA published the Preferred Route designs for the 12 consolidated Core Bus Corridors, fixing the alignments that would be taken into statutory consent. The Preferred Routes confirmed segregated bus lanes and parallel cycle tracks on most corridors, with land-take (mostly residential front gardens) required at many junctions.

The NTA submitted the first Core Bus Corridor consent applications to An Bord Pleanála under the Strategic Infrastructure Development pathway in Section 51 of the Roads Act 1993 (as amended). The Liffey Valley to City Centre corridor was the first to be lodged, followed by the Ballymun/Bombardier and Clongriffin corridors.

An Bord Pleanála granted statutory consent (with conditions) for the Liffey Valley to City Centre Core Bus Corridor — the first BusConnects CBC to be approved. The decision attached dozens of conditions covering tree replacement, archaeology, construction management and CPO mitigation. Residents along the corridor lodged judicial review proceedings.

An Bord Pleanála approved the Ballymun/Bombardier to City Centre and Clongriffin to City Centre Core Bus Corridors during late 2023, again subject to extensive conditions. The northside corridors triggered specific community objections in Drumcondra and on the Swords Road approach (Whitehall) around mature street trees and front-garden CPO.

An Bord Pleanála granted consent for the Kimmage to City Centre and Templeogue/Rathfarnham to City Centre Core Bus Corridors. These were two of the most heavily contested corridors, with named resident groups (Save Our Trees Rathfarnham, Templeogue Tidy Towns, KCR Residents Association) objecting throughout the process — primarily over tree felling and front-garden CPO.

An Bord Pleanála granted consent for the Lucan to City Centre Core Bus Corridor in mid-2024. CPO objections were heard at oral hearings in parallel for Lucan, Liffey Valley and Templeogue/Rathfarnham, with residents seeking to retain front-garden walls, hedges and mature trees. ABP attached conditions requiring NTA to publish detailed tree-replacement and archaeology plans before construction.

Judicial review proceedings were lodged in the High Court against the ABP consents for the Liffey Valley, Templeogue/Rathfarnham and Lucan corridors during 2023–2024, on grounds including inadequate EIA, failure to properly consider tree-felling impacts, and procedural challenges to the CPO process. The reviews delayed construction starts on those corridors by several months.

Enabling works and the first construction contracts on the Liffey Valley to City Centre and Ballymun/Bombardier corridors commenced in spring 2025 following the conclusion of the initial judicial review proceedings. Works include utility diversions, tree removal under licence, junction reconfiguration, and new bus-lane and cycle-track construction.

Updated cost reporting in late 2025 placed the BusConnects Core Bus Corridor programme envelope at approximately €3.5bn, well above the ~€2bn figure used in the preliminary business case at programme launch. The Department of Public Expenditure flagged BusConnects under the Public Spending Code as requiring continued business-case scrutiny as costs rose.

By spring 2026 construction was underway on the Liffey Valley, Ballymun/Bombardier and Lucan corridors with enabling works having started on Templeogue/Rathfarnham. The Bray, UCD/Ballsbridge and Greenhills corridors remained in the statutory consent stage. Full programme completion is currently anticipated into the early-to-mid 2030s.

1. Dublin City Centre (College Green / O'Connell Street)· terminus— Common inner-city terminus for the radial corridors.
2. Clongriffin· terminus— Northeast suburban terminus of the Clongriffin to City Centre corridor.
3. Swords· terminus— Northern terminus of the Swords to City Centre corridor; runs via Drumcondra and Whitehall.
4. Ballymun / Bombardier· terminus— Northside terminus; corridor approved by ABP in late 2023.
5. Finglas / Phibsboro· terminus— Northwest corridor terminating at Phibsboro on approach to the city.
6. Blanchardstown· terminus— Northwest suburban terminus.
7. Lucan· terminus— West suburban terminus; ABP consent granted July 2024.
8. Liffey Valley· terminus— West corridor; first BusConnects CBC to receive ABP consent (August 2023) and first to enter construction.
9. Greenhills· terminus— Southwest suburban terminus.
10. Tallaght / Terenure· terminus— Tallaght to Terenure corridor — distinctive non-radial element of the network linking two suburban centres.
11. Templeogue / Rathfarnham (Kimmage corridor)· waypoint— Heavily contested southside corridor over tree-felling and front-garden CPO; ABP consent granted March 2024.
12. Kimmage· terminus— South-central terminus of the Kimmage to City Centre corridor.
13. Bray· terminus— Southeast suburban terminus; corridor extends along the N11.
14. UCD / Ballsbridge· terminus— Southeast corridor serving UCD Belfield campus via Ballsbridge.

The 12-corridor build-out is designed to deliver continuous bus-priority and segregated cycle infrastructure on each of Dublin's main radial routes. The NTA's published business case projects significant modal shift from private car to bus and cycle, with corresponding reductions in journey times, emissions and road congestion. Modal shift is the core positive impact justifying the programme cost envelope.

Most Core Bus Corridors require a strip of 'land take' along stretches of road, typically taken from residential front gardens through Compulsory Purchase Order. Affected residents lose front walls, gates, hedges, mature shrubs and in many cases driveway depth. The CPO process has been the single most-contested element of the programme across multiple corridors — see Templeogue/Rathfarnham, Liffey Valley, Lucan and Drumcondra/Whitehall objections.

Several corridors take strips from small-business frontages and remove on-street parking on shopping streets (notably Rathfarnham village, Drumcondra Road, Terenure Cross and stretches of the N11 in Bray). Business associations along the affected stretches lodged ABP submissions warning of reduced footfall and access during construction and trading-loss risk on completion.

Several corridors pass through 19th- and early-20th-century suburban streetscapes where the historic boundary walls, cast-iron railings and gate piers form a recognised element of the conservation character (notably in Rathmines, Drumcondra, Rathgar and along the N11 approach). ABP attached conditions to several consents requiring recording and reinstatement where feasible.

The programme requires felling of an estimated several thousand mature street trees across the 12 corridors. Mature urban trees are functionally irreplaceable on a 30–50 year horizon and provide ecosystem services (cooling, stormwater attenuation, biodiversity, air quality) that the replacement-planting ratios committed by NTA cannot fully match in the medium term. Templeogue/Rathfarnham is the most-cited corridor for this impact.

Sponsor mitigation: NTA committed to replacement-planting ratios of at least 1:1 (typically higher), tree-protection plans during construction, and species selection geared to long-lived canopy trees where space allows. Resident groups dispute the adequacy of this mitigation.

Each Core Bus Corridor, as a major urban transport project, is subject to Environmental Impact Assessment under the EIA Directive. An Environmental Impact Assessment Report (EIAR) must be prepared and considered by An Bord Pleanála before consent can be granted. The assessment must cover biodiversity, air, noise, water, soil, climate, landscape, material assets and cultural heritage, plus cumulative effects across the 12-corridor programme.

If breached: Consent decisions can be quashed by judicial review; the High Court has previously remitted Irish transport consents to ABP for re-determination where the EIA was found deficient. CJEU infringement proceedings against Ireland remain a residual risk.

Capital projects above the major-project threshold must complete the full Public Spending Code lifecycle: Strategic Assessment Report, Preliminary Business Case, Final Business Case, and post-implementation review. BusConnects, as a multi-billion-euro programme, is required to maintain a live business case, justify cost changes, and receive Government / Cabinet approval at each Decision Gate.

If breached: Department of Public Expenditure can withhold sanction for further project drawdown; C&AG can flag in annual reports; Public Accounts Committee scrutiny.

Core Bus Corridors are determined by An Bord Pleanála (now An Coimisiún Pleanála) under the Strategic Infrastructure Development pathway. ABP holds an oral hearing in most cases, considers the EIAR and submissions, and grants or refuses consent. The consent typically incorporates the CPO and any Protected Structure / Architectural Conservation Area derogations required.

If breached: Decisions can be challenged by judicial review in the High Court; consents quashed for procedural defects must be re-determined.

Compulsory purchase of private property must (a) be in the public interest, (b) follow procedures provided for by law, and (c) strike a fair balance — including adequate compensation. The CPO elements of each BusConnects corridor are subject to Article 1 P1 scrutiny via the Irish CPO statutes and ECHR Act 2003.

If breached: Affected owners can seek judicial review in domestic courts and ultimately petition the European Court of Human Rights; inadequate compensation can result in damages awards against the State.

Resident groups along the Templeogue / Rathfarnham corridor objected at every stage of the consent process to the planned felling of mature street trees and to the front-garden CPO. The objections focused on the irreplaceability of mature urban canopy on a 30–50 year horizon, the heritage character of the existing streetscape, and the proportionality of the land-take. ABP attached tree-replacement and protection conditions when granting consent in March 2024; the groups subsequently supported judicial review proceedings.

Homeowners along the Liffey Valley to City Centre corridor — the first BusConnects CBC to reach ABP — objected primarily to the front-garden CPO and to junction reconfigurations affecting residential access. Submissions also raised concerns about flood-risk and Liffey-corridor biodiversity. ABP granted consent in August 2023 with conditions; affected homeowners supported the subsequent judicial review.

Residents on the Swords corridor's inner-city sections — particularly through Drumcondra and Whitehall — objected to the proposed widening at Swords Road and Drumcondra Road Lower, citing mature trees, historic walls outside Holy Cross / Clonliffe College and front-garden CPO. Local public representatives raised the issue in the Oireachtas and on Dublin City Council.

Residents along the Lucan corridor objected primarily to front-garden CPO on Ballyfermot Road and Lucan Road, to the removal of mature trees at Chapelizod / Phoenix Park boundary, and to junction reconfiguration affecting estate access. ABP granted consent in July 2024 with conditions including detailed tree-protection and reinstatement plans.