Project Title & Location
I-5/Grand Mound to Maytown Stage One -Add Lanes (Thurston County)

Project Description
This project widens I-5 from Grand Mound (US 12 West I/C) to Maytown by adding one lane in each direction. The work includes flattening an existing freeway curve, improving the Grand Mound and Maytown interchange ramps, and improving Rest Area ramps. There are currently four lanes. There will be six lanes when this project is completed.

Contractor/Consultant
Project has been advertised; not yet awarded pending receipt of bids.

Recent Progress
Plans, Specifications, and Estimates are complete. All environmental permits are in hand (notwithstanding Ecology approval of SSDP/SCUP).   ROW negotiations are complete and headed for closing.  Preliminary work for utility relocations is progressing satisfactorily. Project Development Approval has been granted and the design record is substantially complete.

Design Construction Impacts
To facilitate construction staging, a temporary bridge will be constructed adjacent to Southbound I-5, over Prairie Creek. This will be done to minimize impact to the traveling public and mitigate construction challenges.

Environmental Impacts / Compliance

This project will have minor wetland impacts.  The project will use wetland bank credits that have been established in the corridor to mitigate for project impacts.

The fish passage barrier culvert replacement has been eliminated in favor of upgrading with a substantially less costly wall. Following a site inspection, a determination was made that the existing culvert remains serviceable and in excellent condition.

Impacts to Traffic
During construction, nighttime lane closures and daytime width reductions will be necessary.  Bridge replacement will require long term narrowing of lanes and traffic shifts.

Planned vs. Actual Expenditures
(Total Project Cost)

Nickel funds included in above costs

2005 Transportation Partnership Account