Home / Washington / Columbia County / Millwright

Columbia County · Millwright

Millwright prevailing wage in Columbia County, Washington

$85.80an hour, total

$62.92 wage + $22.88 fringe benefits

Columbia County uses the same millwright rates as 13 other counties. See all of them on one page.

On Washington public works in Columbia County, a millwright must be paid at least $85.80 an hour in total: $62.92 in wages plus $22.88 in fringe benefits for health, pension, vacation, training and other plans. L&I's rate took effect September 2, 2026.

L&I published this rate on August 3, 2026 and it took effect September 2, 2026. Checked against L&I's wage lookup on October 24, 2026.

Base wage and fringe: $62.92 + $22.88

The wage is the taxable hourly rate. The other lines are what Washington law calls "usual benefits": contributions to health, pension, vacation and holiday, apprenticeship and similar plans. A contractor that doesn't provide a benefit pays its value as wages instead (RCW 39.12.010).

Base wage (taxable)	$62.92
Health and welfare	$10.25
Pension	$11.41
Training	$0.77
Other benefits	$0.45
Total straight-time hourly rate	$85.80

Set from: collective bargaining agreement, Millwright Regional Master Agreement between the Millwright Employers Association, Inc. and the Pacific Northwest Regional Council of Carpenters. Where a county has a collective bargaining agreement, L&I adopts its wage and benefits; with more than one, the higher rate prevails. Otherwise L&I uses wage surveys (RCW 39.12.015).

Overtime

L&I overtime code 1B:

Overtime Calculations are based on the hourly rate actually paid to the worker. On public works projects, the hourly rate must be not less than the prevailing rate of wage minus the hourly rate of the cost of fringe benefits actually provided for the worker.

ALL HOURS WORKED IN EXCESS OF EIGHT (8) HOURS PER DAY OR FORTY (40) HOURS PER WEEK SHALL BE PAID AT ONE AND ONE-HALF TIMES THE HOURLY RATE OF WAGE.

All hours worked on Saturdays shall be paid at one and one-half times the hourly rate of wage. All hours worked on Sundays and holidays shall be paid at double the hourly rate of wage.

Washington has no single overtime rule for prevailing wage. Each rate carries its own L&I code, copied here as published.

Pricing a bid?

Put this rate on one printable sheet with the other trades on the job.

Add this rate to a rate sheet

Need the cost of a crew? Open the labor cost calculator.

Davis-Bacon millwright rate in Columbia County

Federally funded or assisted construction here uses the U.S. Department of Labor's wage determinations. When a contract requires both the state rate and the Davis-Bacon rate, paying the higher of the two meets both. The contract documents say which apply.

We don't put a federal figure next to L&I's here, because the two schedules' classifications don't line up one to one. The federal rows for this trade are below; match the classification to the work.

Construction	Federal classification	Base + fringe	Base	WD
Highway	MILLWRIGHT (ADAMS, ASOTIN, BENTON, CHELAN, COLUMBIA, DOUGLAS, FERRY, FRANKLIN, GARFIELD, GRANT, KLICKITAT, KITTITAS, LINCOLNC, OKANOGAN, PEND OREILLE, SPOKANE, …CARP1607-010	$82.05	$61.62	WA20260001 Mod 4

Davis-Bacon rates from SAM.gov, read October 25, 2026. Our federal totals are base plus fringe; DOL prints no total. Washington Davis-Bacon changes

Holidays

L&I holiday code 5A:

Holidays: New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Friday after Thanksgiving Day, and Christmas Day (7).

When this rate changes

Rates lock at the bid date. A project uses “the rates that are in effect on the date when bids by prime contractors are due”, and they stay for the life of the contract. If the contract isn't awarded within six months of the bid date, the award-date rates apply. Contracts without bids use the date they're signed (WAC 296-127-011).
L&I publishes on the first business day of February and August, and rates take effect 30 days later. Corrections can be published at any time and also take effect 30 days later (WAC 296-127-011(1); L&I publications and corrections). L&I's next set is due February 1, 2027, effective March 3, 2027.
L&I doesn't republish every rate each period. A rate stays until L&I changes it, so each one has its own date. This one was published August 3, 2026 and took effect September 2, 2026.

How Columbia County compares

The main millwright rate in every county that has one, and how the pay splits here and in the nearest counties. All bars use the same scale.

Every county in Washington

Columbia $85.80187

$80.28Chelan$88.94King

ColumbiaNearby: Garfield $85.80, Walla Walla $85.80, Douglas $80.28Each column is a group of counties with about the same main rate; its height is how many. 7 counties pay more than Columbia, 13 the same, 18 less.

Wage and fringe benefits, nearby

Columbia Countybase $62.92$85.80
Garfield Countybase $62.92$85.80
Walla Walla Countybase $62.92$85.80
Douglas Countybase $57.81$80.28

Millwright rates in nearby counties

Current L&I rates. You pay the rate for the county where the work is done. The statute defines “locality” as “the largest city in the county wherein the physical work is being performed”, and L&I publishes rates county by county (RCW 39.12.010).

L&I's millwright rates for Columbia County are the same as in 13 other counties: Adams, Asotin, Benton, Ferry, Franklin, Garfield, Grant, Lincoln and 5 more. The closest county with a different rate is Douglas County, at $80.28.

County	Classification	Total	Base	vs Columbia County
Columbia County	Journey Level	$85.80	$62.92
Garfield County	Journey Level	$85.80	$62.92	same
Walla Walla County	Journey Level	$85.80	$62.92	same
Asotin County	Journey Level	$85.80	$62.92	same
Whitman County	Journey Level	$85.80	$62.92	same
Franklin County	Journey Level	$85.80	$62.92	same
Adams County	Journey Level	$85.80	$62.92	same

Washington millwright prevailing wage by county, with a map

Are you being paid this rate?

Add your wage to what your employer pays into health, pension and other plans for you, and compare it with $85.80. Each contractor files an L&I-approved Statement of Intent to Pay Prevailing Wages before it's paid, and an Affidavit of Wages Paid when the job is accepted (RCW 39.12.040). On contracts over $10,000 the approved intent and L&I's contact details are posted on the job site (RCW 39.12.020).

Source

Washington State Department of Labor & Industries, prevailing wage lookup, Columbia County, Millwright (MILL), L&I wage record 149895, published August 3, 2026, effective September 2, 2026: secure.lni.wa.gov/wagelookup/

Each figure comes from L&I's lookup and is checked against L&I's CSV export and a second, separate query. How we check · Download Columbia County as CSV · Report an error