Title
Discuss the innovative intersection options associated with the 2020 Transportation Bond Program Project: East Pecan Street Project.
Summary
On July 27, 2021, the City of Pflugerville approved and executed the Professional Services Agreement (PSA) with Kimley-Horn and Associates, Inc. (KHA) for the engineering design of East Pecan St. from Sun Light Near Way to Weiss Lane (4,200 LF). The Project includes preliminary design services for a six-lane urban roadway with a raised center median. Improvements include curb and gutter, underground storm facilities, a new bridge over State Highway (SH) 130, pedestrian and bicycle facilities, intersection improvements, and utility relocation. Right-of-Way (ROW) acquisition is also included.
This presentation is to provide an overview of the completed tasks by Kimley-Horn to explain need for additional professional engineering services in advance of the proposed regular agenda item 2022-0403 approval of such services related to the East Pecan Street project.
After receiving Notice-to-Proceed, Kimley-Horn proceeded with preliminary design and traffic modeling for the Project. The original scope of services assumed the intersection of E. Pecan Street and Weiss Lane/future Cameron Rd. would consist of a traditional, four-legged intersection. KHA performed a traffic analysis of the existing three-legged and proposed traditional intersection configuration. The results of the traffic analysis indicate an operational failure at the 20th year of service, which traffic congestion and delay would reduce the level of service, requiring more travel lanes to move traffic through the intersection. At the 20th year, the traffic flows exceed intersection capacity due to a high volume of left turns in the East to North and West to South directions. At the 20th year and beyond an innovative intersection could better accommodate the projected high traffic volumes.
The definition of innovative intersection, for the purposes...
Click here for full text