Miller Creek Culvert Replacement, Fish

Passage and Habitat Restoration

Interlocal Agreement and

Funding Authorization

Item No. 6g_supp

Meeting Date: August 11, 2020

Project Background

• City of Burien Project

– Abandon failing culverts blocking fish passage

– Construct new fish passable culverts

– Stream habitat restoration

• Current Status

– Planning, design and permitting substantively complete

– Construction scheduled for Summer 2021

– Funding shortfall

• Commission Motion to advance project (November 2019)

Why is this critical to the Port?

After

Culvert

Failure

Restoration Concept

Objectives:

• Protect Port mitigation sites

• Protect Des Moines Memorial Boulevard

• Restore stream and riparian habitat

• Integrate NERA stormwater, common-use trail,

and utility infrastructure

Design components:

• Abandon existing culverts

• Construct new fish passable culverts

• Restore Stream