Two Months In, Bill 60 Has HART Quietly Studying Skyline Routes to UH Manoa and Deeper into Kapolei

Two months after Mayor Rick Blangiardi signed Bill 60 into law, the Honolulu Authority for Rapid Transportation is quietly conducting preliminary studies for potential Skyline rail extensions that could eventually connect the University of Hawaii at Manoa to the existing system and push deeper into West Oahu’s growing communities.

The legislation, approved by the Honolulu City Council in February and signed March 4, authorizes HART to begin scoping studies for extensions beyond the system’s current Kakaako terminus. The two priority corridors under consideration would extend eastward to serve UH Manoa and westward from the planned Kapolei station to areas like Ko Olina and Kapolei’s expanding residential developments.

HART officials have remained tight-lipped about specific details of the scoping work, but sources familiar with the process say the authority is conducting ridership projections, route feasibility studies, and preliminary environmental assessments for both corridors.

“We’re looking at this methodically and comprehensively,” said HART spokesperson Tina Clothier in a recent interview. “These extensions represent potential game-changers for transportation equity across our island, but we need to get the analysis right before we can talk about timelines or funding.”

Funding Challenges Loom Large

The biggest obstacle facing both proposed extensions remains funding. With the current Skyline system already facing cost overruns that pushed the project’s price tag past $12 billion, any extensions would require new revenue sources that haven’t been identified.

Bill 60 specifically prohibits using existing GET surcharge revenue earmarked for the current rail project to fund the extensions. That means HART and city officials will need to find alternative funding mechanisms, potentially including federal grants, public-private partnerships, or new local taxes.

The UH Manoa extension presents particular challenges given the topographical constraints of crossing the Kalihi Valley and navigating through dense urban neighborhoods. Early estimates suggest the eastward extension could cost anywhere from $3 billion to $5 billion, depending on the final route and station locations.

The westward extension into deeper Kapolei areas faces fewer geographical obstacles but would traverse some of the fastest-growing residential areas on Oahu, where land acquisition costs could prove substantial.

Community Groups Already Mobilizing

Even without concrete plans or funding, neighborhood groups along both potential corridors have begun organizing. In Kalihi, residents have formed an informal coalition to advocate for community input in any route planning that could affect their neighborhoods.

Meanwhile, West Oahu community leaders are pushing for the westward extension to prioritize connections to major employment centers like the Ko Olina resort area and planned developments near Kapolei’s civic center.

“Our communities have been underserved by transit for decades,” said West Oahu resident and community advocate Maria Santos. “If these extensions move forward, we want to make sure they actually serve working families, not just tourists and students.”

The UH Manoa extension has drawn support from student government leaders and faculty, who argue improved transit access could reduce parking pressures on campus and make the university more accessible to students from across the island.

Technical Studies Continue

HART’s current scoping work focuses on identifying potential station locations, analyzing ridership patterns, and conducting preliminary environmental reviews. The authority is also examining how extensions might integrate with existing bus routes and other transportation infrastructure.

For the UH Manoa corridor, planners are evaluating multiple routing options, including elevated alignments that would minimize surface disruption and underground sections through particularly sensitive areas.

The westward extension planning involves coordination with planned residential and commercial developments in Kapolei, where developers have expressed interest in transit-oriented development around potential future stations.

City Council Transportation Committee Chair Andria Tupola, who championed Bill 60, said the scoping studies should provide a clearer picture of both extensions’ feasibility within the next 12 to 18 months.

For Honolulu residents, these extensions represent the next chapter in the island’s transit evolution. While the current Skyline system won’t reach its full operational capacity until 2031, the extension studies signal city leaders’ commitment to expanding rail access to underserved communities.

The success of any extensions will ultimately depend on securing funding and maintaining political support through multiple election cycles. But with Bill 60 now providing legal authorization for the planning work, HART can begin laying the groundwork for what could eventually become Oahu’s most comprehensive public transit network.