Iowa tunnel worker prevailing wage, county by county

A tunnel worker's Davis-Bacon prevailing wage in Iowa is $38.55 an hour in every county that has one (99), for the main classification.

Main tunnel worker classification in each county (Laborers: class aa- pipelayer, concrete specialist; tunnelman (missouri river)), Davis-Bacon wage determinations on SAM.gov, as of October 25, 2026. A contract keeps the wage determination in its bid documents. Modifications published before bid opening apply to it, though one published less than 10 days before can be left out if the agency finds there isn't time to tell bidders (29 CFR 1.6(c)). Checked October 25, 2026.

$38$38$38$38$38$38Tunnel Worker, main rate, base + fringe per hour. Each shade holds about a fifth of the counties.

Which counties pay which rate

Counties	Main classification	Base + fringe	Base
Polk County group, 99 localities: Adair, Adams, Allamakee, Appanoose, Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista, Butler, Calhoun, Carroll, Cass, Cedar, Cerro Gordo, Cherokee, Chickasaw, Clarke, Clay, Clayton, Clinton, Crawford, Dallas, Davis, Decatur, Delaware, Des Moines, Dickinson, Dubuque, Emmet, Fayette, Floyd, Franklin, Fremont, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Harrison, Henry, Howard, Humboldt, Ida, Iowa, Jackson, Jasper, Jefferson, Johnson, Jones, Keokuk, Kossuth, Lee, Linn, Louisa, Lucas, Lyon, Madison, Mahaska, Marion, Marshall, Mills, Mitchell, Monona, Monroe, Montgomery, Muscatine, O'Brien, Osceola, Page, Palo Alto, Plymouth, Pocahontas, Polk, Pottawattamie, Poweshiek, Ringgold, Sac, Scott, Shelby, Sioux, Story, Tama, Taylor, Union, Van Buren, Wapello, Warren, Washington, Wayne, Webster, Winnebago, Winneshiek, Woodbury, Worth, Wright	LABORERS: CLASS AA- Pipelayer, concrete specialist; tunnelman (MISSOURI RIVER)	$38.55	$29.95

1 group of counties with identical DOL rates, and 0 counties with rates of their own.

Questions about Iowa tunnel worker pay

What is the tunnel worker prevailing wage in Polk County?

$38.55 an hour: a $29.95 base wage plus $8.60 in fringe benefits, under wage determination IA20260002, modification 2. Overtime and every tunnel worker classification in Polk County.

Does tunnel worker prevailing wage include fringe benefits?

Yes. In Polk County the $38.55 total is a $29.95 base wage plus $8.60 in fringe benefits, about 22% of the total. The employer owes the full amount for every hour worked.

Does tunnel worker prevailing wage pay overtime in Iowa?

Davis-Bacon rates are straight time. On contracts over $100,000, the Contract Work Hours and Safety Standards Act requires 1½ times the basic rate for hours over 40 in a workweek (40 U.S.C. 3702). The fringe is owed for every hour at its straight-time amount.

Do apprentice tunnel workers get this rate?

Davis-Bacon determinations list journeyworker rates. Apprentices in a program registered with DOL or a recognized state agency can be paid the program's percentage of the rate, within its ratio; anyone else gets the full rate (29 CFR 5.5(a)(4)).

Why do some counties have the same tunnel worker rate?

DOL often publishes the same tunnel worker rates for several counties. Across Iowa, the 99 counties with a tunnel worker rate fall into 1 distinct sets of rates, and 1 of those sets are shared by more than one county; the largest covers 99 counties (the Polk County group).