The location of the Willamette meridian and Willamette baseline can be identified by various streets that follow or parallel their courses, often named to call attention to this fact.
North–South streets and the meridian ;Streets named because they follow the meridian • In
Clackamas County, SW Stafford Road and Meridian Road follow the meridian. • In
Marion County several sections of Meridian Road follow the meridian, but hilly terrain forces many deviations. • In
Linn County, portions of Meridian Heights Loop, north of Sweet Home follow the meridian. • In
Jackson County, Meridian Road follows several miles of the meridian. • In
Thurston County, Washington, east of
Lacey, three sections of Meridian Road follow the meridian, totaling about three miles (5 km). • In
Kitsap County, Washington, west of
Silverdale near
Apex Airport, Willamette Meridian Road NW follows the meridian for about three miles (5 km). ;Other streets that follow the meridian • In
Multnomah County, SW 65th Avenue and a short section of
Interstate 5 immediately south of the Barbur Blvd. interchange overlay the meridian. • In
Clark County, Washington, north of
Ridgefield, NW 71st Avenue follows the meridian for about two miles. • In
Lewis County, Washington, east of
Toledo, Templeton and Schmidt roads follow the meridian for the mile adjacent to
SR 505. South of
US Highway 12 at
Ethel, Tucker and Classe Roads follow the meridian for about 3 miles. • In
Pierce County, Washington, on the
Key Peninsula, 150th Avenue S follows the meridian its entire length. • In
Thurston County, Washington, east of
Lacey, Tucker Road SE (no relation to the Tucker Road in Lewis County) follows the meridian for about . • In
Kitsap County, Washington, near the western border of
Naval Submarine Base Bangor, parts of Lester Road NW, Grampus Road, and Snook Road follow the meridian for a total of about two miles. • In
Whatcom County, Washington, near
Birch Bay, Jackson Road (south of the bay) and Harborview Road (north of the bay) both follow the meridian, for a total of about five miles. • In
Jefferson County, Washington, near
Hadlock, Cleveland Street, south of Port Townsend Bay, follows the meridian for about 3 blocks. ;Streets named because they parallel the meridian • In
Whatcom County, Washington, Guide Meridian Road (
State Route 539) is named after the
Guide Meridian between R2E and R3E, east of the Willamette meridian. • In
Newberg, Meridian Street is several miles west of the Willamette meridian.
East–West streets and the baseline ;Streets named because they follow the baseline • Baseline Road in
Tillamook,
Washington,
Hood River,
Gilliam, and
Morrow counties all follow or start at the Willamette baseline. ;Other streets that follow the baseline •
Stark Street in east
Portland (formerly Base Line Road) and Washington County follows the Willamette baseline. ;Streets named because they parallel the baseline • Division Street in Portland (formerly Section Line Road) follows the division between the first and second rows of square-mile sections south of the Willamette baseline. ==See also==