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

signalized intersections along the road. This will cause all of them to operate at capacity, LOS E.
The peak hours will be extended and exist for most of the day. This section of Rt. K will have some
of the worst congestion that can be expected in St. Charles County.
From Rt. N to I-64 commercial development will increase and a considerable amount of residential
development will continue to the east and west. Volumes will increase from 35,000 to close to
50,000 by 2030. More intersections will be signalized and congestion will increase substantially.
Since some of the intersections are now operating at LOS D, it can be expected that they will all
operate upwards of their capacity LOS E, and some beyond, LOS F, by that time. Serious
congestion can be expected at many intersections during the peak hours and these hours will be
expanded.
It has been recommended in Legacy 2030 that a corridor study be conducted by MoDOT to evaluate
possible ways of alleviating future traffic congestion on Rt. K. With severe congestion forecasted
for the northern section and serious congestion expected on the southern part, it is only appropriate
that this study is conducted for its entire length from I-70 to I-64.
Rt. M
This road runs through the middle of old downtown O’Fallon as Main St. from I-70 north to Rt. P.
It carries about 6,000 vehicles in downtown and these volumes are not expected to increase much.
On the north end between Rt. P and Rt. 79 volumes are around 4,000 and will increase to 7,000 as
the area develops. Both sections will operate at LOS D with some congestion.
C-2.4. Minor Arterials
This classification includes a number of MoDOT roads and many major county roads. In some parts
of the county traffic on these roads has already increased substantially as they are in areas that are
growing rapidly. Some are starting to reach a level where congestion is becoming a problem.
Rt. 94
From Rt. B to Rt. 370 commercial and residential development is expected to increase along the
corridor. By 2030 traffic volumes are expected to reach more than 22,000. The two lane road will
be widened at new signalized intersections to better handle turning movements. However, overall
speed on this two-mile section will decrease and the intersections will operate close to capacity.
Congestion will be serious during the peak hours and the road is designated at LOS E. Although
improvements are noted in the Illustrative Projects listing in Legacy 2030, they do not mention
widening. This road will need widening to three or four lanes based on expected growth in the area.
From this segment to I-64, Rt. 94 is a Principal Arterial and has been discussed above. From I-64
west to Rt. D, it is two lanes and traffic volumes will grow to about 16,000 by 2030. This section
only has two traffic signals, one at Rt. D and the other at the south frontage Rd. of I-64. They are
expected to operate at LOS D as is the road.
South of Rt. D, Rt. 94 remains a two-lane road and volumes only increase slightly. Although minor
growth is expected in this area, the terrain is such that a substantial increase is not expected. By
2030 volumes will rise from 3,000 to 4,000 near Rt. F. The LOS will remain the same at C.
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