Tulsa Comprehensive Plan - PLANiTULSA

Appendix
TrAnsporTATIon II: UrBAN COrrIDOrS
sTep 3
Alternatives Development
By placing more emphasis on making the street
frontage walkable and direct walking and biking
connections to adjacent neighborhoods, tree lawns and
detached walks are prioritized over travel lanes. The
alternatives were based upon national best practices
for converting four lane undivided urban roadways to
three lane and two lane facilities. Variations of these
lane conversions were tested to better accommodate
pedestrians and on-street parking.
FIGUre 7: synCHro TrAFFIC moDeL oF
15TH, peorIA & UTICA
Proposed Conditions Map
Map - Proposed Conditions
Peak Hour (Estimated)
7/19/2009
sTep 4
Alternatives evaluation
Using the daily traffc counts, the traffc engineer
estimated peak hour turning movement volumes at the
intersections of 15th and Peoria and 15th and Utica
and tested them using a Synchro traffc model (Figure
7). The traffc engineer concluded that intersection
delay was less than a few seconds and level of service
was unchanged for through movement and the left turn
level of service was greatly improved. Any diversion of
traffc due to the reduction in lanes will be absorbed by
the parallel facilities of the Broken Arrow Expressway
and 21st Street.
Pedestrian and bicycle level of service was not
quantitatively tested during this analysis, but
qualitatively, the preferred alternative describes a design
that has reduced pedestrian crossing distances, frequent
mid-block crosses, expanded sidewalks and pedestrian
refuge islands.
15th St
100
700
100
350
100
Peoria
100
350
100
100
600
200
15th St
100
400
100
350
100
Utica
100
350
100
400
100
15th St
FIGUre 8: sCorInG mATrIx oF THe TWo ALTernATIves
sTep 5
Selection of a Preferred Alternative
For the purposes of illustrating the urban corridor
planning process, this catalyst project simulated the
consensus building step that engages the community in
the selected alternative by allowing them to score the
alternatives (See Figure 8).
Figure 9, on the next page, illustrates a conceptual
design of the preferred alternative.
JULy 2010
AP
APPeNDIx – TULsA CompreHensIve pLAn 39