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Data center campus · West of Route 83 between Bryn Mawr and Foster avenues, Wood Dale (part in Bensenville), DuPage County, Illinois

CyrusOne Wood Dale campus (Bryn Mawr)

Under construction as of Oct. 20, 2025

A multi-phase CyrusOne campus planned for six data centers on roughly 66 acres in Wood Dale and Bensenville, with its first buildings under construction. Also known as: Bryn Mawr II, Bryn Mawr III, CHI6.

Cite← Illinois data centers
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Power18MW reported · stated
Floor area1.4e+06sq ft
Site66acres
IT load18MW

Who is behind it

ProjectCyrusOne Wood Dale campus (Bryn Mawr)Also: Bryn Mawr II, Bryn Mawr III, CHI6
Developer and teamCyrusOne (through C1 Chicago 1 LLC; C1 Chicago 2 LLC)
End userNot found in the recordsNot yet named in any record or credited report we have found.

The record, newest first

  1. Wood Dale's Community Development Commission scheduled a hearing on a final Phase I plan to allow Building 2, citing revised plans driven by prospective tenant needs, across the 24-acre Bryn Mawr II and 42-acre Bryn Mawr III properties. (City of Wood Dale, Sept. 10, 2025)

  2. CyrusOne topped out two buildings totaling more than 500,000 square feet with 18 MW of initial IT capacity. (CyrusOne, May 13, 2025; Data Center Dynamics, May 21, 2025)

  3. DuPage County's economic development group described the project as six data centers totaling about 1.4 million square feet, due for completion by 2032. (Choose DuPage, March 6, 2025)

  4. Wood Dale approved the 42-acre Bryn Mawr III phase, four buildings of about 996,850 square feet, 7-0 (case CDC-2024-0007), per a compilation of city records; the city's 2025 notice confirms council approval of the 42-acre redevelopment in January 2025. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026; City of Wood Dale, Sept. 10, 2025)

  5. Illinois DCEO approved C1 Chicago 1 LLC and C1 Chicago 2 LLC in Wood Dale for the Data Center Investment Program with a $250 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)

Conflicts and open questions

  • Under 50 MW at initial phase; full build-out MW not published. Kept as a confirmed campus under construction.
  • Acres use the city notice (about 24 + 42 acres). Choose DuPage once refers to the project as NTT's, apparently in error.
  • Outcome of the Oct. 20, 2025 hearing not found.
  • Coordinates approximate, Bryn Mawr Avenue area west of Route 83 in Wood Dale.

The full record

Status note
Two buildings topped out in May 2025; a hearing on the final Phase I plan to allow Building 2 was set for Oct. 20, 2025.
Power note
Initial IT capacity stated by CyrusOne at topping out; scalable, no full build-out figure published.
Evidence
Primary public records
Size class
Under 50 MW (outside main scope; kept for completeness)
Map position approximate, from the reported address or area. Updated Oct. 17, 2026.