In April 2010, The Washington State Department of Transportation issued a Determination of Non-Significance (pdf 22 kb) for the following three projects within the Tacoma/Pierce County HOV Program:

1. I-5: M Street to Portland Avenue – HOV
2. I-5: Portland Avenue to Port of Tacoma Road – Northbound HOV
3. I-5: Portland Avenue to Port of Tacoma Road – Southbound HOV

Each of these projects will improve traffic flow increase traffic safety by designing and constructing southbound and northbound HOV lanes on I-5, improving ramp alignments, and adding auxiliary lanes.