Skyline Rail Eyes Waikiki and UH Manoa Extensions as HART Begins Feasibility Studies

The Honolulu Authority for Rapid Transportation received approval from the City Council this week to begin studying potential extensions of the Skyline rail system, including a long-awaited branch to the University of Hawaii at Manoa campus and a possible spur into Waikiki.

The 8-1 council vote on Tuesday authorizes HART to conduct feasibility studies for multiple expansion scenarios beyond the current system’s planned terminus at Kakaako. The studies will examine ridership projections, engineering challenges, and cost estimates for reaching two of Honolulu’s most significant destinations.

The UH Manoa extension has been a topic of discussion since the rail project’s early planning phases more than a decade ago. A branch line could potentially serve the university’s 17,000 students and thousands of faculty and staff, many of whom currently drive from across the island or rely on TheBus routes that can take over an hour during peak times.

“This is exactly what we need to make rail truly transformative for our community,” said Council member Carol Fukunaga, who has long advocated for university access. “Getting students and workers to UH Manoa without cars would take thousands of vehicles off H-1 every day.”

The Waikiki extension presents different opportunities and challenges. Tourism industry leaders have expressed interest in direct rail connections to the resort district, which could reduce shuttle bus congestion and provide visitors with easier access to downtown events and shopping.

Current Progress and Timeline

HART is currently constructing Segment 3 of the rail line through downtown Honolulu, with stations planned for Kakaako, Downtown, and Chinatown before reaching Ala Moana Center. That 4.1-mile segment is expected to open by late 2025, completing the initial 20-mile system from East Kapolei.

The feasibility studies authorized this week will take approximately 18 months to complete. HART officials estimate the research will cost $3.2 million, funded through existing federal transportation grants rather than additional local taxes.

The studies will examine several potential routes for reaching UH Manoa, including following the current bus route up University Avenue or using alternative corridors through Kalihi-Palama or Keeaumoku Street. Each option presents unique engineering challenges given Honolulu’s topography and dense urban development.

Financial and Political Realities

Any rail extensions would require new funding sources beyond the current general excise tax surcharge that expires in 2030. The original 20-mile system has already cost more than $12 billion, making it one of the most expensive transit projects per mile in U.S. history.

Federal funding could potentially cover a significant portion of expansion costs, but that would require demonstrated ridership demand and local matching funds. The Biden administration has prioritized transit investments, though future federal support remains uncertain with changing political landscapes.

Council member Andria Tupola cast the lone dissenting vote Tuesday, citing concerns about costs and the system’s current performance metrics. “We need to prove this rail works for residents before we start planning expensive expansions,” she said during the meeting.

The existing rail system has faced criticism for lower-than-projected ridership numbers, though HART officials note that many potential riders are waiting for the full system to open before changing their commuting patterns.

Community Impact Considerations

The feasibility studies will also examine how rail extensions might affect existing neighborhoods along potential routes. Previous rail construction through urban Honolulu has displaced some businesses and altered traffic patterns, though it has also spurred development in communities like Kalihi and Kapolei.

University area residents have expressed mixed reactions to a potential rail line. Some welcome improved transit access, while others worry about construction disruption and changes to neighborhood character around the Manoa campus.

The studies will include extensive community outreach and environmental impact assessments, particularly important given the cultural significance of areas near UH Manoa and potential archaeological sites along various routes.

For Honolulu residents, these feasibility studies represent the first concrete step toward expanding the rail system beyond its original scope. While actual construction of any extensions remains years away, the studies could provide a roadmap for creating the comprehensive transit network that rail supporters have long envisioned.

The next phase will involve detailed ridership modeling and preliminary engineering work, with results expected by mid-2027. Those findings will ultimately determine whether Honolulu’s rail system evolves into a truly island-wide transportation network or remains a West Oahu to downtown connector.