Making transportation projects on state-owned highways subject to certain contracting conditions.

SB 6345 requires that all contracts for transportation projects on state-owned highways in Washington must pay prevailing wages established by the industrial statistician. It directs the industrial statistician to prioritize collective bargaining agreement rates for trades with union contracts, using the rate covering the most workers if multiple agreements exist, and to conduct wage surveys only where no agreements apply. The law applies to contracts bid or awarded on or after June 1, 2029, and amends existing law to clarify that prevailing wage determinations must follow these rules. This directly affects contractors working on state highway projects by mandating specific wage standards for laborers and mechanics.