Bridge & Ferry Terminal Maintenance Permit

Washington’s bridge and ferry terminals need regular upkeep, including inspections, washing, painting, and surface repairs to keep them safe. When workers clean or perform maintenance on these structures, wastewater is created and can flow directly into surrounding water. The Bridge and Ferry Terminal Maintenance General Permit directs how that wastewater is managed to protect water quality while supporting the inspection and maintenance of bridges — and protecting the safety of Washington commuters.

About 10 entities are covered under this permit, ranging from single-site operations to large, multi-bridge programs, with WSDOT as our largest with more than 500 bridge and ferry terminal sites. The permit can also apply to local government and municipalities, as well as contractors who are working on their behalf.

The current permit was issued June 29, 2022. The new permit takes effect July 17, 2026, and is valid through July 16, 2031.

Current permit documents

Monitoring guidance documents

Permit reissuance

We are pleased to announce that we are reissuing the Bridge and Ferry Terminal Maintenance General Permit. A formal announcement was published in the Washington State Register on June 3, 2026: WSR 26-11-065.

New permit - effective July 16, 2026

Previous public involvement

We accepted public comments from Dec. 3, 2025, through Feb. 6, 2026. We held two online public meetings and formal hearings on Jan. 6 and 7, 2026, to explain the proposed changes to the permit, answer questions, and provide opportunity for formal spoken testimony on the draft permit. Appendix E of the fact sheet shows our response to comments received.

Historical permit documents

2017 general permit (June 21, 2017 - July 31, 2022)