Bridges, Stairs, and Other Structures

What We Do

Seattle is a city of hills, surrounded by water. Streets and sidewalks are the foundation of our transportation network, but bridges, stairs, retaining walls, and areaways are crucial structures that keep Seattle moving. In addition to deterioration that comes with regular use over time, our region's heavy rains and proximity to seawater add to the wear and tear on our structures.

SDOT operates, inspects, and maintains many bridges and other structures in the city, which includes work like painting bridges, repairing expansion joints, columns, and beams, replacing stairways, and inspecting structures regularly.


  • Maintain and operate safe and reliable transportation structures that keep people moving

  • Preserve, repair, or replace worn or deteriorating structures

  • Conduct regular inspections of bridges and other structures

  • Ensure bridges, stairways, and other structures meet structural, safety, and seismic standards


Learn more about how and where we're maintaining and/or operating road structures in Seattle.