[MissoulaGov] proposal for orange st. bike lane- short term

[Bob Giordano]

Since Orange St. will be repaved again (after asphalt cures) in a couple
weeks, here is a way to change the current narrow shoulder into a usable
bike lane.  -Bob G, mist


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current measurement (from center of lane lines) mid-block on orange:

gutter pan 1'4", 'shoulder' 2'6", outer lane 10', inner lane 10', center
lane 11'1", inner lane 10', outer lane 9'10", shoulder 2'11", gutter pan
1'4".

total: 59'2"

Restripe Proposal:

gutter pan 8", bike lane 4'4", outer lane 9'9", inner lane 9'9", center
lane 10'2", repeat.

total: 59'2"

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Note: several sections of traffic lanes on the Higgins Bridge are 9'6" and
9'9".  When next to a 5' bike lane (at least 4' of clear riding space),
these narrower lane widths work safely and efficiently.

There are many references to _increasing_ crashes/severity as lane
width increases.  Consider:


> "The pattern in the coefficients for both the fatality and injury models

> is quite clear. When there are more arterial and collector lane widths of

> 12 ft or more, traffic fatalities and injuries increase"

>

> Accident Analysis & Prevention

> Volume 35, Issue 4, July 2003, Pages 599-611

>

> The AASHTO green book allows all above widths for Orange St.

>

> The current orange configuration seems dangerous with the narrow

> shoulder.