Overview
Chip sealing preserves the integrity and life of deteriorating roadway by applying a Bituminous Surface Treatment (BST) seal coat of oil and gravel (chips) to the existing pavement. Restoration is necessary before the underlying road structure is damaged, requiring a much more expensive rebuild.

The following sections were chip-sealed:

• SR 21/US 2 to Keller Ferry
• SR 28/Lamona to Harrington
• SR 28/Harrington to Davenport
• SR 31/Tiger to Metaline Falls
• SR 174/Grant County Line to SR 21
• SR 260/Kahlotus to Washtucna
• SR 271/Oakesdale to US 195
• SR 272/Colfax to Idaho
• SR 291/Suncrest to SR 231

How you benefit

Economic incentive
A new driving surface that protects the underlying roadway and extends the life of the sub-surface roadway structure.

Partnerships & cooperation
WSDOT addresses the concerns of tribal nations using the process outlined in Section 106 of the National Historic Preservation Act and the WSDOT Tribal Consultation Policy adopted in 2003 by the Transportation Commission as part of the WSDOT Centennial Accord Plan.

Funding
Funding consisted of:
Pre-Existing Funds (PEF): $1,085,000
CWA: $2,242,000
Total: $3,327,000