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HB 84

Transportation – Major Highway Capacity Expansion Projects and Impact Assessments (Transportation and Climate Alignment Act of 2025)

2025 Regular Session Introduced by Mark Edelson

Maryland requires comprehensive climate and environmental impact assessments for major highway expansion projects, prioritizing alternatives to traditional road-widening approaches.

Hearing 3/27 at 1:00 p.m.
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Bill Summary · HB 84

Legislative bill overview

HB 84 establishes new requirements for major highway capacity expansion projects in Maryland, mandating comprehensive impact assessments that evaluate transportation, climate, and environmental effects before approval. The bill requires state transportation officials to consider alternatives to highway expansion and align projects with climate goals outlined in Maryland's climate action plans.

Why is this important

Highway expansion projects represent significant public investments with long-term consequences for traffic patterns, air quality, greenhouse gas emissions, and land use. This bill could substantially change how Maryland evaluates and approves transportation infrastructure, potentially shifting priorities toward alternatives like transit, cycling infrastructure, or congestion pricing instead of traditional road widening.

Potential points of contention

  • Climate vs. mobility trade-offs: Provisions restricting highway expansion may conflict with transportation needs in growing areas and could face opposition from suburban communities and construction industries arguing for necessary capacity improvements.
  • Cost and timeline implications: Mandatory comprehensive impact assessments will increase project development costs and timelines, potentially delaying infrastructure improvements or making projects economically unfeasible.
  • Definition and scope ambiguity: The bill's language around "major highway capacity expansion" may be interpreted differently, creating uncertainty about which projects trigger these requirements and potentially subjecting some projects to unexpected regulatory burdens.

Compiled from official sources — confirm details with the bill’s official record.

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