Galveston Island Transportation Network for Multi-Hazard Resilience Assessment

Approximately 600 miles of roadway and 13 major bridges model Galveston Island's transportation system for resilience analysis. Created by Amini et al. (2025) and updated in 2026, this dataset supports link-level fragility and graph-based connectivity studies. It is part of a larger NIST Community Resilience Center of Excellence testbed providing built, natural, and social systems data for the island.

Use Cases

• Assess post-hazard road connectivity based on the network topology and mainland access points.
• Perform link-level fragility analysis for roads and bridges based on attributes like inundation duration and storm surge forces.
• Calculate tract-level percentages of buildings retaining mainland access after a storm based on shortest-path analyses.
• Optimize multi-hazard mitigation strategies using the detailed network as part of a larger analysis pipeline.

Strengths

• Contains approximately 600 miles of roadway with 13 major bridges, providing substantial spatial coverage.
• Includes link-level attributes such as segment length, posted speed, and number of travel lanes for detailed analysis.
• Part of a comprehensive testbed with companion hazard, building, and social data, enabling integrated studies.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file formats are unknown, which may limit suitability assessment.
• Data is specific to Galveston Island, Texas, which may limit generalizability to other regions.

Provenance

Source

DesignSafe Data Depot Repository Harvested Subcollection, authored by Amini, Kooshan.

Collection Method

Likely derived from geographic information systems and augmented for analysis, as indicated by the addition of minor bridges.

Time Range

null

Freshness

Last updated 2026-04-20 14:52:52; freshness should be verified.

Geography

Galveston Island, Texas, along the Gulf Coast of Mexico.