St. Charles County Transportation Plan 2030 - East-West Gateway ...

Number of Crashes
The number and severity of crashes that occurred on each road segment for the three years are
shown on Table 22. Their number of fatality, disabling injury, minor injury and property damage
crashes are shown for each year for each of the 24 road segments. There were a total of 1,901 |
crashes reported for the three years. Of these, only three (3) were fatalities and they made up less
than two tenths of one percent (0.2) of the total. Disabling injury crashes totaled 43 and made up
two (2) percent of the total. Personal injury and property damage crashes totaled 1,855 making up
97.5 percent of the total. It is obvious that the severity of crashes on the County’s roads is quite low
and travel on these roads appears quite safe. These roads are mostly in urban and suburban areas
where speed limits are low (35 to 50 mph). This lessens the chance for higher severity type crashes.
Table 22 shows that two Mexico Rd. segments, Mid Rivers Mall Dr. to Rt. K and Cave Springs Rd.
to Mid Rivers Mall Dr., had the highest number of crashes, 120 and 99 respectively, followed by
Zumbehl Rd. (98), from I-70 to Rt. 94, and Muegge Rd. (52) from Mexico Rd. to McClay Rd. A
third segment of Mexico Rd. From Rt. K to Bryan Rd. was next followed by Bryan Rd., Jungermann
Rd., and Elm St. Mid Rivers Mall Dr. from I-70 to Rt. 94 was also high on the list.
Crashes per Mile
A ranking of the road segments by the number of crashes per mile is shown in Table 23. The first
three road segments are the same as the first three shown on Table 22. They are two segments
Mexico Rd., and Zumbehl Rd. Harvester Rd. comes next followed by the third segment of Mexico
Rd., Salt Lick Rd., and Muegge Rd. The average number of crashes per mile for the 24 road
segments for the three year period 31.4.
Severity Rating
Table 24 ranks the road segments by crash severity. The number of fatal and disabling injury
crashes were low. Again, all three segments of Mexico Rd. were at the top of the list, followed by
Elm St. In the city of St. Charles, Bryan Rd., and Jungermann Rd. The mean severity rating was
quite low indicating the County and city roads did not have a high number of fatal or severe injury
crashes.
Crash Rates
Table 25 indicates the ranking of road segments based on their crash rate. Mexico Rd. from Mid
Rivers Mall Dr. to Rt. K had the highest followed by Zumbehl Rd. from I-70 to Rt. 94. The other
two segments of Mexico Rd. Were third and fourth. The roads with low numbers of crashes and
traffic volumes also had low crash rates.
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