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

Winghaven Blvd. Rt. N to I-64.
Winghaven Blvd. is an extension of Bryan Rd. south to I-64. However, it was built as a parkway
with a grassed center median and left turn lanes at major intersections. Commercial development
has been built around the Rt. N intersection and along part of its length. At I-64, MasterCard
anchors the interchange with considerable other development including a hospital and a number of
strip commercial developments on both sides of the road. In 2005 traffic volumes were around
15,000. It is expected that by 2030 volumes will reach about 26,000. The intersections are presently
operating with only minor congestion during the peak hours but this congestion will increase over
the years. However, future volumes will stay within the roads capacity and it should operate with
modest congestion during the peak hours.
Wentzville Pkwy. I-70 to U.S. 61. (A Minor Arterial)
This five-lane road is currently operating without any congestion except for the area just north of
I-70 past Pearce Blvd. Through this area to north of Meyer Rd. considerable commercial
development has grown on both sides of the road and a number of new traffic signals have been
installed. The I-70 interchange has been upgraded with additional traffic lanes and an improved
traffic signal system. The road carried close to 18,000 vehicles in 2005 and it is expected that this
number will increase to 25,000 by 2030. Congestion will start to be a problem along the section
from I-70 through Pearce Blvd. north toward Meyers Rd. The intersection of Pearce Blvd. is
expected to operate at capacity.
On the section from Meyers Rd., which is in the northwest corner of the Parkway, east to U.S. 61,
it remains a five-lane road but volumes, which are presently around 7,000, will be about 15,000 in
2030. Some intersections may be signalized and they will operate without any congestion problems.
C-3.2. Minor Arterial Roads
Most of the county’s Minor Arterial roads are presently operating without any severe congestion.
Many of them have been improved from old two lane roads with poor grades into three, four, or five
lane roads with improved alignment. This provides more capacity and safer roads. Many old roads
are scheduled for similar improvements. Over the years traffic volumes on many of these roads will
increase, especially in the parts that will continue to experience significant growth. However, the
increases will be small and not dramatically change their traffic operations, especially those that
have been improved. The ones where traffic increases may be a problem are discussed below.
Elm Ave. From Rt. 370 through Elm Point Rd. has been widened to five lanes and is carrying
about 18,000 vehicles. The Rt. 370 interchange is responsible for generating these volumes.
Commercial development lines the corridor and the road feeds traffic to and from Elm Point Rd.
which has considerable development, and into the old part of St. Charles. It is expected that
volumes will increase by 2030 to around 25,000. This will cause some congestion problems at the
signals but volumes will be below their capacity.
Zumbehl Rd. From I-70 to Rt. 94 is expected to have an increase in traffic due to growth in the
corridor. Volumes are presently around 25,000 and congestion is experienced at some of the major
intersections. This congestion will grow worse in the future and by 2030 some intersections may
have volumes close to their capacity as they rise to 33,000. This will cause congestion problems
during the peak hour periods.
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