Island - FROSTAD RD - 90%
Project Number: 1442
From milepost 2.31 to milepost 2.75
RATA Funds: $1,480,000
Legislative District: 10
Status:
Date Approved: 2001
Frostad Road is a minor collector roadway between State Route 20 and several rural developments on the east side of Whidbey Island. The project area is located on Whidbey Island north of Oak Harbor in Island County.
The roadway was 22 foot wide with zero to two foot shoulders. The structural condition of the roadway was poor, due to saturation of the embankment and base material. There are wetland areas adjacent to both sides of the alignment throughout the length of the alignment. There were two distinct areas of total slope failure due to over steepened side slopes, loose fill, and lack of adequate shoulders.
The project scope was 3R, improving a 1.32 mile section of Frostad Road from SR20 to Taylor Road along with a 0.10 mile section of Dike Road that extends north from Frostad Road. The project included widening the two travel lanes from an existing 11 foot width to a 12 foot width and by adding paved shoulders to a width of 6 feet beyond the travel lanes. Additional improvements include reinforced shoulders, MSE walls, recycling asphalt, horizontal and vertical realignment, and water quality and drainage improvements.
In order to minimize Right of Way acquisition and to minimize wetland impacts the project included 15 structural MSE walls with 28,624 square feet of combined wall surface area and a 5,568 feet combined wall length. The temporary and permanent wetland impacts that did occur with the project improvements required the compensatory construction of approximately 7.5 acres for wetland rehabilitation.
There were several positive letters to the local paper commenting on the final project.
The roadway was 22 foot wide with zero to two foot shoulders. The structural condition of the roadway was poor, due to saturation of the embankment and base material. There are wetland areas adjacent to both sides of the alignment throughout the length of the alignment. There were two distinct areas of total slope failure due to over steepened side slopes, loose fill, and lack of adequate shoulders.
The project scope was 3R, improving a 1.32 mile section of Frostad Road from SR20 to Taylor Road along with a 0.10 mile section of Dike Road that extends north from Frostad Road. The project included widening the two travel lanes from an existing 11 foot width to a 12 foot width and by adding paved shoulders to a width of 6 feet beyond the travel lanes. Additional improvements include reinforced shoulders, MSE walls, recycling asphalt, horizontal and vertical realignment, and water quality and drainage improvements.
In order to minimize Right of Way acquisition and to minimize wetland impacts the project included 15 structural MSE walls with 28,624 square feet of combined wall surface area and a 5,568 feet combined wall length. The temporary and permanent wetland impacts that did occur with the project improvements required the compensatory construction of approximately 7.5 acres for wetland rehabilitation.
There were several positive letters to the local paper commenting on the final project.