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| Existing Conditions |
As one of the first interstates constructed in
Marion County, the project corridor’s current design
is less than desirable by today’s standards. Simply
put, the roadway does not meet the current design
standards for shoulder widths, interchange ramp
acceleration, deceleration, and taper lengths, clear
zone and barrier requirements, and vertical curves.
In addition to this, the base concrete layer of the
roadway is between 34 and 41 years old and has
widespread distress.
When this segment of I-465 was completed in 1961/62,
the roadway featured only two lanes in each
direction, although the mainline bridges were built
at that time to accommodate three lanes in each
direction. The third travel lane was added in the
median in 1966/67. The roadway has 12-foot lanes and
was built to a design speed of 70 miles per hour.
Access is provided at interchanges only. The maximum
grade over the length of the roadway is three
percent. The existing right-of-way is typically 200
feet, but expands to 260 feet in certain areas. The
posted speed limit is 55 miles per hour. The
interchanges in the current study (from south to
north) are: I-70, Airport Expressway, US
40/Washington Street, US 36/Rockville Road, 10th
Street, I-74/US 136/Crawfordsville Road, and 38th
Street.
Existing Interchange Characteristics
|
Location |
Type |
|
I-70 |
Semi-Directional |
|
Airport Expressway |
Semi-Directional |
|
US 40/Washington Street |
Cloverleaf |
|
US 36/Rockville Road |
Cloverleaf |
|
10th Street |
Semi-Directional |
|
I-74/US 136/Crawfordsville Road |
Cloverleaf |
|
38th Street |
Partial Cloverleaf |
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For additional information about the project, contact the Public Involvement Office at (317) 917-5315.