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PSE Power to the SR 522 Transit Hub

Route comparison: the original overhead concept from UW Bothell and the revised underground concept from the North Creek Business Park. Protest 011, Contract 9727.

ILLUSTRATIVE EXHIBIT. Route alignments are approximate and schematic, drawn from PSE's conceptual routing record (PSE email of September 11, 2024, and PSE plan sheets transmitted with Skanska LTR 300) and the Design-Builder's Preliminary and Final Utilities submittals for Package 7. No executed easement and no defined bore path exist in the record (Skanska LTR 273; Skanska LTR 300). This is not a design document. Marker positions for the transit hub and the freeway crossing are approximate.

Original concept WITHDRAWN BY PSE

Overhead line extension from the existing PSE circuit near the UW Bothell campus (UI-0467, Utility Appendix U2) north to the transit hub. Carried in the Design-Builder's Preliminary Design of May 17, 2024, and priced in its base bid (the $550,000 "UW Bothell O/H route base bid" credit).

The Design-Builder's own Preliminary Utilities submittal (sheets plotted May 17, 2024) labels the hub service feed "PSE OVERHEAD POWER" on sheet UT28. PSE, September 11, 2024: "we've agreed that the current design showing an overhead line extension is infeasible" (PSE access and permitting issues). Source: Preliminary Utilities sheets (UT28) · PSE email + plan sheets · Skanska LTR 300

Revised concept CONCEPTUAL

Underground route from PSE's system in the North Creek Business Park (J-box 228087-166830 at 11807 North Creek Parkway S), across the Home Depot parcel under an easement amendment still in negotiation through October 2025, then a horizontal directional drill under all lanes of I-405 to the hub. Identified by PSE as "probably the preferred option for now."

The Design-Builder's Final Utilities submittal (sheets plotted October 4, 2024, twenty-three days after PSE's determination) carries the same sheet UT28 with the overhead label gone and "PSE HDD DRILLING OPERATIONS PIT" added, plus a new sheet UT11 for the buried route that the Preliminary submittal did not have. The bore was not included in PSE's submitted permit (February 20, 2025, per the Perteet chronology). Source: Final Utilities sheets (UT28, UT11) · PSE email + plan sheets · Skanska LTR 273

The two concepts

	Original	Revised
Character	Overhead extension	Underground duct bank + HDD
PSE source	Existing circuit UI-0467 near UW Bothell	North Creek Business Park J-box
Land rights	Existing PSE facilities	Easement amendment across the Home Depot parcel (in negotiation through Oct 2025)
Freeway crossing	None	HDD bore under all lanes of I-405 (not in PSE's submitted permit, 2/20/25)
Status	Declared infeasible by PSE, 9/11/2024	Conceptual. No executed easement, no defined bore path in the record.

Why it matters

The routing change originated with the Utility Owner: PSE declared the overhead extension infeasible and identified the alternates, with the North Creek path preferred. The Contract assigns the Design-Builder to identify the service point of connection, comply with Utility Owner requirements, and excavate the pathway between the connection point and the transformer (TR 2.27.6, TR 2.27.6.2). The undefined bore path and unexecuted easement are also why the submitted cost figures remain, in the Design-Builder's words, preliminary and not binding.

Legend

Original concept (overhead, withdrawn)
Revised concept (underground, conceptual)
HDD bore segment under I-405 (approximate)

Anchors: transit hub at the northwest corner of the I-405 / SR 522 interchange (approximate placement); UW Bothell campus, 11807 North Creek Parkway S, and the Home Depot parcel geocoded from public sources; interchange position verified against the project spatial dataset (Wall 23.80R, MP 23.80). Basemap © OpenStreetMap contributors, © CARTO. Gated exhibit for the P011 case file. Generated 2026-07-14.