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Sherwood Forest Neighborhood
The City of Marysville has been informed by multiple citizens of traffic safety concerns within the neighborhood. Based upon these concerns, the City Traffic Safety Committee (now NTS program) has evaluated each concern including performance of traffic counts upon several neighborhood streets. The traffic counts are summarized below:
Severity score 6.5/9.0
| Date | Location | Average Daily Traffic (ADT) |
Average Speed (mph) |
85% Speed (mph) |
% of vehicles traveling greater than 10 mph over 25 mph speed limit |
|---|---|---|---|---|---|
| December 2013 |
128th St. NE (east of State Ave) |
2970 | 29.4 | 34.9 | 8.9% |
| November 2014 |
126th Pl. NE (east of 48th Ave. NE) |
340 | 25.3 | 29.3 | 2.6% |
| June 2016 |
43rd Ave. NE (north of 125th Pl. NE) |
1546 | 28.6 | 33.9 | 11.8% |
| November 2016 |
123rd Pl. NE (between 122nd Pl. NE & 48th Dr. NE) |
559 | 26.2 | 31.9 | 6.9% |
The 85% speed is the commonly accepted engineering value indicating the speed at which 85% of drivers fall under and is found to be the speed at which the majority of drivers feel is a safe speed given the roadway conditions and surrounding environment. The 85% speed is also the value typically used to set speed limits and evaluate compliance with speed limits.
Residential roadways with a consistent speeding problem which may be effectively altered with traffic calming device installation typically have greater than 3% of drivers traveling at greater than 10 mph over the speed limit.
Based upon the cumulative results of the neighborhood traffic data, it has been determined that traffic calming device installation is necessary within the Sherwood Forest neighborhood.
A survey was performed in June of 2019, in which all properties were solicited within 600' of a proposed traffic calming device or whose sole access(es) would be impacted by traffic calming device installation. To move forward with the installation, greater than 60% of respondents were required to tally "yes" for the proposal. Based on the survey, 63% favored the project consisting of four (4) traffic circles and two (2) speed tables.
This NTS project included the installation of four (4) traffic circles proposed at the following intersections:
- 125th Pl. NE & 43rd Ave NE
- 123rd Pl. NE & 43rd Ave NE
- 123rd Pl. NE & 48th DR NE
- 126th Pl. NE & 48th Ave NE
and two (2) speed tables upon 128th ST NE between State Ave and 43rd Ave NE.