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Botticelli and Oak Terrace Rehabilitation Project

Project Background/Summary

Botticelli is classified in the Transportation System Plan (TSP) as a major collector that handles about 3,500 vehicles per day. It is located in the Mountain Park neighborhood of Lake Oswego and the project limits are from Melrose Street to Touchstone.

Botticelli was chosen for reconstruction this year due to the fact that it has experienced rapid degradation and that it has a significant traffic load. In the past 3 years, this roadway went from being in good/fair condition to being in poor condition. 

Oak Terrace is classified as a local street in the McVey-South Shore neighborhood.  The project runs from Palisades Terrace Drive to just past Terrace Drive.  This roadway was chosen at this time because it is in poor condition and staff decided it would be a good candidate for a process called Full-Depth Reclamation (FDR).


Project Description

In order to reconstruct the roadway, the contractor will be using a FDR process in order to improve the strength of the existing material within the roadway structural section. Although this process has been used in other jurisdictions the city has never used this particular method.

Typically in order to reconstruct a roadway, a contractor removes the existing asphalt and then digs out about 12 inches of material to then be replaced with imported gravel that is trucked onto the site.  Full-Depth Reclamation rebuilds worn out asphalt pavements by recycling the existing roadway.  The old base materials are pulverized, mixed with cement and water, and compacted to produce a strong, durable base that is then paved over. 

The benefits of this type of construction include the fact that there is less material to purchase, less trucking will be needed, it eliminates the need to do localized spot repairs, and the length of construction may be shorter than normal; all of which leads to a cost savings.

Botticelli and Oak Terrace are being used as demonstration projects for the FDR because they have been identified as good candidates for this treatment and they are of different functional classes which will help us evaluate this process for future use.  Although not every street is a good candidate for FDR, the engineering department is confident that the use of this process will be the answer for many of our roadways.  

In addition to the roadway improvements on Botticelli, stormwater drainage improvements in the form of catch basin retrofits will occur in order to increase water quality.  Also, Botticelli will be re-striped, either in the same manner of its current state to allow parking, or it will be striped with an uphill bike lane and parking removed.  This issue is being explored and a final decision on the striping is not necessary until later in the project.  The addition of an uphill bike lane is identified project as project 93.2 in the TSP.

This project is to be awarded by Council on June 20, 2017 and the work is required to be substantially complete on or before September 30, 2017. 


September 5, 2017

Sharrow markings on Botticelli

At the City Council meeting on September 5th, Council approved the recommendation to install sharrows on Botticelli in the uphill direction. This MUTCD-approved pavement marking is suitable on narrow, low-speed roadways with on-street parking. They encourage cyclists to ride away from the door zone and indicate to drivers to expect cyclists.


August 28, 2017

Striping Update

City Council will hear a report and provide direction regarding striping changes on Botticelli at the September 5, 2017 council meeting.


August 17, 2017

Oak Terrace Reconstruction

  • Road reconstruction on Oak Terrace to start September 1st.
  • Expect road closures and parking restrictions.
  • Use alternate routes when possible.
  • Construction delay, noise and dust are anticipated.
  • Scheduled completion September 30, 2017.


July 17, 2017

Botticelli Construction Road Closure Schedule:

The Contractor plans to work in phases to limit traffic interruption in the neighborhood.  The following phasing schedule is subject to change. 

  • Phase 1: July 17-21: Closed between Touchstone and Blazer Trail.
  • Phase 2: July 24-28:  Closed between Blazer Trail and Mountain Park Racquet Club (MPRC).
  • Phase 3: July 31-Aug 14: Closed between MPRC and El Greco.
  • Phase 4: August 15-21: Closed between El Greco and Botticelli Condos driveway.
  • Phase 5: August 22-Sept 21: Closed between Botticelli Condos and Melrose.

Oak Terrace Construction Road Closure Schedule:

  • September 1-18

June 27, 2017

  • The Contractor is proposing to begin road reconstruction on Botticelli on July 10, 2017.


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Capital Improvement Projects

Contact Us

Crystal M. Shum, PE, Associate Engineer
Project Manager

Matt Tipton, P.E. Associate Engineer
Construction Manager

Construction Schedule Update

Construction Schedule - July 17th

Summer 2017 Construction Projects Map

Construction Projects Map