Adopt-a-Highway sponsorship

Learn how to sponsor litter clean-up on a section of State Highway and get your business name or logo on the Adopt-a-Highway area sign.

As a sponsor, your business hires an approved contractor to pick up litter on a section of highway, which is done six times per year. In recognition of this sponsorship, your company name and/or logo are placed on the Adopt-a-Highway sign for that highway section.

Approved contractors can help you to determine what locations are available for adoption, as can our area coordinators.

Sponsorship cost

Each contractor sets their own prices for litter pick-up and disposal. There is a fee of $300-$900 for the highway sign, depending on the section of the highway. The sign fee is for initial installation, and any time the sign needs to be replaced.

Sign design

Adopt-a-Highway signs are intended to provide recognition for your sponsorship, rather than promote a message. As a sponsor, you may either choose to just put your business name, or you may put your business logo.

All signs can support up to three lines of text. Signs for two-lane highways use 3" letters and can have up to 13 characters per line. Signs for larger highways and freeways use 4" letters and can have up to 14 characters per line. Logos need to fit within 33" wide x 15" tall for smaller signs, and 45" wide x 20" tall for larger signs. Please keep in mind that small text is hard to read as speeds go higher, so logos with little or no text work better.

See the following signs in the WSDOT Sign Fabrication Manual for examples of basic signs:

  • I6-901: Adopt-a-Highway (Small)
  • I6-902: Adopt-a-Highway Name Plaque (Small)
  • I6-901A: Adopt-a-Highway (Large)
  • I6-902A: Adopt-a-Highway Name Plaque (Large)

Approved contractors

The following contractors have been approved to conduct roadside litter clean-up and removal as part of our sponsorship program:

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.