The following roads or portions thereof shall have a maximum speed limit of twenty-five miles per hour:
1st Street (Easton), entire road
1st Street (Ronald), entire road
1st Street (Thorp), entire road
2nd Street (Easton), entire road
2nd Street (Thorp), entire road
3rd Street (Ronald), entire road
3rd Street (Thorp), entire road
29th Avenue (Ellensburg), entire road
Alley Street (Ronald), entire road
Alliance Road, from MP 0.00 to MP 0.07
All Seasons Drive, entire road
Arctic Avenue (Ronald), entire road
Atlantic Avenue (Ronald), entire road
Bakers Road, entire road
Beech Road (airport), entire road
Boat Ramp Road (Vantage), entire road
Bowers Business Loop, entire road
Bowers Road (airport), from Airport Road to end of county road
Bridle Way, entire road
Broadview Road, entire road
Brown Street (Vantage), entire road
Burke Road, entire road
Cabin Creek Road, from Railroad Street (Easton) to MP 0.51
Camas Lane, entire road
Carek Road, entire road
Cessna Road (airport), entire road
Chester Street (Thorp), entire road
Cohoe Road, entire road
Columbia Avenue (Vantage), entire road
Cooke Canyon Road, from Coleman Creek Road to end of county road
Cross Street (Easton), entire road
Danko Road, entire road
Dapple Gray Way, entire road
Delta Street, entire road
Depot Street (Easton), entire road
Dodge Road, from Thrall Road to milepost 0.25
Elmview Road (airport), entire road
Emerick Road, entire road
Evergreen Valley Loop Road, entire road
Evergreen Way, entire road
Falcon Road (airport), entire road
Fanhouse Road (Ronald), entire road
Fieldstone Court, entire road
First Avenue (Grasslands), entire road
Fourth Avenue (Ronald), entire road
Fowler Creek Road, entire road
Frost Mountain Drive, entire road
Game Bird Loop, entire road
Ginkgo Avenue (Vantage), entire road
Glover Road, entire road
Gobbler's Knob Road, entire road
Goodwin Road (Thorp), from Main Street to First Street
Grindrod Road, from milepost 0.46 to Venture Road
Groeschell Road, entire road. Hannah Road, entire road
Hidden Valley Road, from Emerick Road to end of road
Hungry Junction Road, milepost 2.15 to milepost 2.33
Huntzinger Road, from milepost 4.88,1000 feet North of Wanapum Dam access to milepost 5.14, 370 feet South of Wanapum Dam access
Joyce Street (Vantage), entire road
Kachess Avenue (Easton), entire road
Kachess Dam Road, entire road
Kachess River Road, entire road
Kittitas Highway, from milepost 5.49,800 feet West of Kittitas City Limits to Kittitas City Limits
Kittitas Street (Vantage), entire road
Lake Cabins Road, entire road
Lakeview Avenue (Vantage), entire road
Ley Road, from milepost 0.70 to end of road
Liberty Road, from milepost 1.48, east to end of road
Locust Street (Ellensburg), Kittitas County portion, Washington Avenue to Seattle Street
Longhorn Loop, entire road
Lookout Mountain Drive (Grasslands), entire road
Main Street (Thorp), entire road
Martin Road (Roslyn), entire road
Matthews Road, entire road
McDonald Road, entire road
Meadow View Drive, entire road
Meadow Way, entire road
Mill Creek Road, entire road
Morel Road, entire road
Morgan Court, entire road
Mt. Baldy Lane, entire road
Mt. Daniels Drive (Grasslands), entire road
Mt. Stuart Avenue (Grasslands), entire road
Mustang Court, entire road
Nelson Dairy Road, entire road
No. 245 Road (Roslyn), entire road
No. 81 Road, from Clerf Road to Alpine Drive
Orchard Road, entire road
Pacific Avenue (Ronald), entire road
Pasco Road, entire road
Patrick Mine Road, entire road
Patrick's Park Drive, entire road
Pease Road, entire road
Pelton Avenue (Easton), entire road
Perry Road, entire road
Pfenning Road, from Oak Street to Vantage Highway
Pioneer Road, entire road
Piper Road (airport), entire road
Quartz Mountain Drive (Grasslands), entire road
Railroad Street (Easton), from milepost .83, Bridge #03112 to Cabin Creek Road
Ranch Road, entire road
Range View Road, entire road
Red Bridge Road, entire road
Red Cedar Drive, entire road
Red Mountain Drive (Grasslands), entire road
Riverbottom Road, from milepost 0.00 (Umptanum Road) to milepost 0.35
Roan Drive, entire road
Roundup Drive, entire road
Sage Grouse Lane, entire road
Seaton Road, entire road
Shaft Street, entire road
Silver Trail, entire road
Silverton Road, entire road
Sinclair Rod, entire road
Smith Drive, entire road
South Cle Elum Way, from Cle Elum city limits to South Cle Elum city limits
Stingley Road, entire road
Sunlight Drive, entire road
Table Mountain Drive (Grasslands), entire road
Third Avenue (Grasslands), entire road
Thorp Highway, from milepost 6.42 (First Street, Thorp) to milepost 6.47
Upper Green Canyon Road, entire road
Valley View Drive, entire road
Vantage Park Road (Vantage), entire road
Via Kachess Road, entire road
Village Drive (Grasslands), entire road
Wayne Street (Vantage), entire road
Westside Road, from Golf Course Road to Nelson Siding Road
White Pine Drive, entire road
White Road, entire road
Willis Road, East, entire road
Wrangler Drive, entire road
Yellowstone Road, entire road.
(Res. RD-46-71, 1971; Res. RD-71-73, 1973; Res. RD-20-74 1974; Res. RD-68-74 1974; Res. RD-32-75 1975; Res. RD-39-75 1975; Res. RD-82-77 1977; Res. RD-59-78 1978; Res. RD-39-79, 1979; Res. RD-68-79 1979; Res. DPW-66-81, 1981; Res. DPW-78-81, 1981; Res. DPW-80-81, 1981; Ord. 82-9, 1982; Ord. 82-11, 1982; Ord. 83-4, 1983; Ord. 83-6, 1983; Ord. 83-6-A, 1983; Ord. 85-3 § 3, 1985; Ord. 87-6, 1987; Ord. 90-4A, 1990; Ord. 91-1, 1991; Ord. 91-5, 1991; Ord. 92-15, 1992; Ord. 92-19, 1992; Ord. 93-11, 1993; Ord. 93-13, 1993; Ord. 94-20, 1994; Ord. 94-31, 1994; Ord. 94-37, 1994; Ord. 95-12, 1995; Ord. 97-06, 1997; Ord. 98-05, 1998; Ord. 2002-21, 2002; Ord. 2003-20, 2003; Ord. 2004-06, 2004; Ord. 2004-34, 2004; Ord. 2004-37, 2004; Ord. 2006-08, 2006; Ord. 2006-24, 2006; Ord. 2006-43, 2006; Ord. 2006-45, 2006; Ord. 2006-50, 2006; Ord. 2006-51, 2006; Ord. 2006-52, 2006; Ord. 2006-62, 2006; Ord. 2007-31, 2007; Ord. 2008-10, 2008; Ord. 2009-08, 2009; Ord. 2009-14, 2009; Ord. 2011-008 , 2011; Ord. 2014-001, 2014; Ord. 2014-002, 2014; Ord. 2014-003, 2014; Ord. 2014-016, 2014; Ord. 2015-006, 2015; Ord. 2017-003, 2017; Ord. 2018-004, 2018; Ord. 2019-001, 2019; Ord. 2019-002, 2019; Ord. 2021-004, 2021; Ord. 2023-001, 2023; Ord. 2023-002, 2023; Ord. 2025-009, 9/16/2025)
The following roads or portions thereof shall have a maximum speed limit of thirty miles per hour:
Buffalo Lane, entire road
(Ord. 2014-016, 2014; Ord. 2025-009, 9/16/2025)
The following roads or portions thereof shall have a maximum speed limit of 35 miles per hour:
Airport Road (Cle Elum), entire road
Airport Road (Ellensburg), from Ellensburg city limits to Bowers Road
Ballard Hill Road, entire road
Bender Road, from Reecer Creek Road to Ellensburg city limits
Bettas Road, entire road
Bowers Road, from Reecer Creek Road to Airport Road
Brick Mill Road, from Naneum Road to Fairview Road
Brown Road, Hanson Road to Barnes Road intersection
Cabin Creek Road, from Hiline Canal to end of Kittitas County portion, milepost 2.92
Caribou Road, entire road
Carroll Road, entire road
Cassasa Road, entire road
Chandler Road, entire road
Clarke Road, from US 97 to Lower Green Canyon Road
Cove Road, from Thorp Highway to Robinson Canyon Road
Durr Road, entire road
Dry Creek Road, from Reecer Creek Road to SR 97
Faust Road, from MP 0.00 to Bridge #88212
Game Farm Road, entire road
Gladmar Road, entire road
Golf Course Road, entire road
Goodwin Road, entire road
Hanson Road, from Cove Road, west to end of county road
Hidden Valley Road, from SR 970 to Emerick Road
Horlick Road, entire road
Horvatt Road, from SR 903 to Roslyn city limits
Hundley Road, entire road
Hungry Junction Road from milepost 1.20 to milepost 1.50
Judge Ronald Road, entire road
Kachess Lake Road, entire road
Kittitas Highway, 450 feet west of Fairview Road, milepost 5.30, to 800 feet west of Kittitas City Limits, milepost 5.49
Kittitas Highway, from milepost 1.03 to milepost 1.34
Klocke Road, entire road
Lake Cle Elum Dam Road, entire road
Lambert Road, entire road
Ley Road, Swauk Prairie Road to milepost 0.70
Liberty Road, from SR 97 to milepost 1.48
Lower Peoh Point Road, entire road
Main Street (Vantage), from I-90 Interchange to Recreation Drive
Manastash Road from Cove Road at milepost 3.56 to end of road
Markovich Road, entire road
Masterson Road, entire road
McCullough Road, entire road
McManamy Cut-off, entire road
McManamy Road, entire road
Mohar Road, entire road
Naneum Road, from Vantage Highway to Watson Road
Nelson Siding Road, entire road
No. 81 Road, from Alpine Drive to Vantage Highway
O'Neil Road, entire road
Pays Road, entire road
Railroad Street, from Cabin Creek Road, east to end of road
Railroad Street, from west 190 overpass east to Bridge #03112 milepost .83 (Easton)
Recreation Drive (Vantage), entire road
Reecer Creek Road, from Dry Creek Road to Bowers Road
Ringer Loop, entire road
Riverbottom Road, from milepost 0.35 to milepost 3.06 (Umptanum Road)
Salmon La Sac Road, from SR 903 to end
Sanders Road, entire road
Sisters Road, entire road
Sparks Road, entire road
Storie Lane, entire road
Strande Road, from Barnes Road to Manastash Road
Susan Road, entire road
Swauk Prairie Road, entire road
Talmadge Road, entire road
Taneum Road, East, from Thorp Highway to milepost 1.00
Taneum Road, West, entire road
Thomas Road, from Wilson Creek Road to Naneum Road
Thorp Highway, from milepost 5.16,950 feet south of I-90, to milepost 6.42 (First Street, Thorp)
Thorp Highway, milepost 6.7 to milepost 7.7
Tozer Road, entire road
Umptanum Road, from milepost 1.00 to milepost 9.03
Upper Peoh Point Road, entire road
Vanderbilt Road, entire road
Watson Cutoff Road, entire road
West Sparks Road, entire road
Westside Road, from South Cle Elum City Limits to Golf Course Road
Wilson Creek Road, from Vantage Highway to Game Farm Road
Woodhouse Loop, entire road
Woods & Steele Road, entire road
Zrebiec Road, entire road
(Res. RD-46-71, 1971; Res. RD-473, 1973; Res. RD-71-73, 1971; Res. RD-61-75 1975; Res. RD-84-75 1975; Res. RD-85-75 1975; Res. RD-47-75 1976; Res. RD-32-77 1977; Res. RD-48-77 1977; Res. RD-79-77 1977; Res. RD-55-78 1978; Res. RD-58-78 1978; Res. RD-71-78 1978; Res. RD-39-79, 1979; Res. RD-105-79 1979; Res. DPW-71-80, 1980; Res. DPW-75-80, 1980; Res. DPW-59-81, 1981; Res. DPW77-81, 1981; Ord. 82-6, 1982; Ord. 82-9, 1982; Ord. 82-11, 1982; Ord. 83-4, 1983; Ord. 83-5, 1983; Ord. 83-6, 1983; Ord. 85-2, 1985; Ord. 85-3 § 3, 1985; Ord. 86-2, 1986; Ord. 87-3, 1987; Ord. 88-3, 1988; Ord. 92-15, 1992; Ord. 92-19, 1992; Ord. 92-21, 1992; Ord. 93-11, 1993; Ord. 93-14, 1993; Ord. 94-6, 1994; Ord. 94-20, 1994; Ord. 94-34, 1994; Ord. 94-37, 1994; Ord. 95-3, 1995; Ord. 95-11(A), 1995; Ord. 95-12, 1995; Ord. 96-7, 1996; Ord. 96-11, 1996; Ord. 9613, 1996; Ord. 97-07, 1997; Ord. 97-15, 1997; Ord. 2003-19, 2003; Ord. 2005-28, 2005; Ord. 2005-33, 2005; Ord. 2006-45, 2006; Ord. 2006-52, 2006; Ord. 2007-15, 2007; Ord. 2007-31, 2007; Ord. 2011-008, 2011; Ord. 2011-010, 2011; Ord. 2012-008, 2012; Ord. 2013-007, 2013; Ord. 2014-003, 2014; Ord. 2014-016, 2014; Ord. 2015-008, 2015; Ord. 2016-011, 2016; Ord. 2016-015, 2016; Ord. 2016-018, 2016; Ord. 2017-003, 2017; Ord. 2017-008, 2017; Ord. 2018-017, 2018; Ord. 2019-011, 2019; Ord. 2021-004, 2021; Ord. 2022-009, 2022; Ord. 2023-004, 2023; Ord. 2025-005, 5/20/2025; Ord. 2025-009, 9/16/2025; Ord. 2025-010, 9/16/2025)
The following roads or portions thereof shall have a maximum speed limit of forty miles per hour:
There are currently no entries in this category.
(Ord. 84-4, 1984; Ord. 2007-31, 2007; Ord. 2021-004, 2021; Ord. 2025-009, 9/16/2025)
1. 
The board of county commissioners orders the speed limit for the entire Kittitas County road system to be limited to a maximum of fifty miles per hour per RCW 46.61.400.
2. 
The following roads or portions thereof shall have a maximum speed limit of fifty miles per hour:
a. 
Bullfrog Road, from milepost 0.0 (I-90) to milepost 0.72/
b. 
Canyon Road, from Ellensburg city limits to Thrall Road.
c. 
Cleman Road, Kittitas County portion, Badger Pocket Road to Thrall Road.
d. 
Cove Road, from Robinson Canyon Road to end of road.
e. 
Taneum Road, East, from milepost 1.00 to milepost 2.84.
f. 
Thorp Highway, from milepost 6.79 to milepost 7.69.
g. 
Thorp Prairie Road, entire road.
(Res. RD-77-73, 1973; Ord. 85-2, 1985; Ord. 86-2, 1986; Ord. 95-11(A), 1995; Ord. 2007-31, 2007; Ord. 2014-003, 2014; Ord. 2025-009, 9/16/2025; Ord. 2025-010, 9/16/2025)
The following roads sections are school speed zones and have a maximum speed limit of twenty miles per hour on "school days" from 7:30 a.m. to 4:00 p.m.:
1. 
Thorp School District.
a. 
Thorp Highway, North from MP 6.55 to MP 6.91.
2. 
Easton School District.
a. 
1st Street (Easton) from MP 0.14 to MP 0.26.
b. 
Railroad Street (Easton) from MP 1.09 to MP 1.32.
c. 
Cabin Creek Road from MP 0.03 to MP 0.09.
3. 
Damman School District.
a. 
Manastash Road from MP 0.00 to MP 0.14.
b. 
Riverbottom Road from MP 0.00 to 0.12.
c. 
Umptanum Road from MP 1.56 to MP 1.80.
4. 
Kittitas School District.
a. 
Kittitas Highway from Kittitas City Limits, Milepost 5.64, west 300 feet, Milepost 5.59.
5. 
The following road section is a school speed zone and has a maximum speed limit of twenty miles per hour on "school days" from 7:30 a.m. to 4:00 p.m. or when lights are flashing: Ellensburg School District.
a. 
Pfenning Road from MP 0.16 to MP 0.68.
6. 
The following road section is a school speed zone and has a maximum speed limit of twenty miles per hour when lights are flashing: Cle Elum - Roslyn School District.
a. 
State Route 903 from Milepost 3.76 to Milepost 3.87.
"School days" as referenced herein are the days that school is in session (including "makeup" days due to school closures) as established by the school district referenced to each road. "MP" refers to "mile post" number designation of county roads. These roads are to be posted with signage substantially as follows:
"SCHOOL SPEED LIMIT 20" and "SCHOOL DAYS 7:30 AM TO 4:00 PM", or
"SCHOOL SPEED LIMIT 20" and "SCHOOL DAYS 7:30 AM TO 4:00 PM OR WHEN FLASHING", or
"SCHOOL SPEED LIMIT 20 WHEN FLASHING"
The director of public works is authorized to post such additional advisory signage, warnings, or lights as deemed appropriate in the vicinity of these school areas to warn of the presence of a school and/or children.
This section is enacted pursuant to RCW 46.61.415 and RCW 46.61.440, in which the county is authorized to create a school speed zone that may extend three hundred feet from the border of the school property. A person found to have committed any infraction relating to speed restrictions within a school shall be assessed a monetary penalty equal to twice the penalty assessed under RCW 46.63.110. This penalty may not be waived, reduced, or suspended.
(Res. RD46-71, 1971; Ord. 2001-20, 2001; Ord. 2002-12, 2002; Ord. 2006-45, 2006; Ord. 2007-17, 2007; Ord. 2010-04, 2010; Ord. 2025-009, 9/16/2025)
The following roads or portions thereof shall have a maximum speed limit of twenty miles per hour:
1. 
Keechelus Drive.
2. 
Romans Court.
3. 
Rampart Drive.
4. 
Cascade Place.
5. 
Snoqualmie Drive.
6. 
Garmisch Place.
7. 
Hyak Drive East.
8. 
Kendall Place.
9. 
Kitzbuhel Place.
10. 
Chamonix Place.
11. 
St. Moritz Place.
12. 
Arlberg Place.
13. 
Innsbruck Drive.
14. 
Colockum Road, from milepost 2.23 to milepost 21.61.
(Ord. 96-21, 1996; Ord. 2009-17, 2009; Ord. 2014-003, 2014; Ord. 2014-016, 2014; Ord. 2025-009, 9/16/2025)
1. 
A roadway construction zone is an area where construction, repair, or maintenance work is being conducted by public employees or private contractors, on or adjacent to any public roadway.
2. 
The Kittitas County director of public works may, after a written determination to the Kittitas County board of commissioners that there exists a safety hazard for workers in a construction zone, erect traffic control devices, including signs limiting the maximum speed to twenty-five miles per hour.
3. 
No person may drive a vehicle in a roadway construction zone at a speed greater than that allowed by traffic control devices.
4. 
A person found to have committed any infraction relating to speed restrictions in a posted roadway construction zone shall be assessed a monetary penalty equal to twice the penalty assessed under RCW 46.63.110. This penalty may not be waived, reduced, or suspended.
5. 
A person who drives a vehicle in a roadway construction zone in such a manner as to endanger or be likely to endanger any persons or property, or who removes, evades, or intentionally strikes a traffic safety or control device is guilty of reckless endangerment of roadway workers and may be punished under the provisions of Chapter 9A.20 RCW.
(Ord. 94-19, 1994; Ord. 2025-009, 9/16/2025)