Tunnel Worker prevailing wage, Polk County group, Iowa (99 counties)

DOL sets the same tunnel worker rates, row for row, in 99 counties: 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 and Wright. Every figure on this page applies in each of them.

$38.55an hour, base wage + fringe benefits (our sum)

$29.95 base wage + $8.60 fringe benefits · SUIA2002-002

On federally funded or assisted heavy construction in each of these 99 counties, a tunnel worker must be paid at least $38.55 an hour: a $29.95 base wage plus $8.60 in fringe benefits, under wage determination IA20260002 (modification 2). DOL prints no total, so $38.55 is our sum of the two.

Wage determination IA20260002, modification 2, published June 24, 2026, for heavy construction; rate identifier SUIA2002-002 (December 1, 2014). Checked against sam.gov on October 25, 2026.

Davis-Bacon is the only prevailing wage here (federally funded or assisted work). Iowa has no state prevailing wage law (DOL state table).

DOL lists 2 tunnel worker rates for each of these counties, from $38.55 to $40.55 an hour. See all of them.

Base wage and fringe benefits: $29.95 + $8.60

The base wage is the taxable hourly wage. DOL prints the fringe benefits as one hourly figure, not itemized; it can go to health, pension, vacation and training plans, or be paid as cash where the state allows.

Base wage (taxable)	$29.95
Fringe benefits (one figure, not itemized)	$8.60
Base + fringe benefits (our sum; DOL prints no total)	$38.55

When does this rate change?

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)).
DOL changes a WD by publishing a numbered modification on SAM.gov. This page reads the modification named in the Source line; the Iowa change log lists what each one changed.

Every tunnel worker rate in the Polk County group

As DOL lists them. The highlighted row is the one this page leads with.

Classification	Base wage	Fringe benefits	Total rate	WD
LABORERS: CLASS AA- Pipelayer, concrete specialist; tunnelman (MISSOURI RIVER)SUIA2002-002	$29.95	$8.60	$38.55	IA20260002 Mod 2
LABORERS: CLASS AA- Pipelayer, concrete specialist; tunnelman (MISSISSIPPI RIVER)SUIA2002-002	$31.95	$8.60	$40.55	IA20260002 Mod 2

How the Polk County group compares

The main tunnel worker rate in every county that has one, and how the pay splits here and nearby. All bars use the same scale.

Every county in Iowa

Wage and fringe benefits, nearby

Polk County groupbase $29.95$38.55
Dallas Countybase $29.95$38.55
Warren Countybase $29.95$38.55
Story Countybase $29.95$38.55

Which county is in which tunnel worker group

Every Iowa county with a tunnel worker rate. Counties DOL treats alike share one page; the rest have their own.

Counties	Main classification	Base wage	Total rate
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)	$29.95	$38.55

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

Iowa tunnel worker prevailing wage by county, with a map

More from DOL on this rate

SAM.gov wage determinations
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)).

Every trade's rates, county by county: 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

Are you being paid this rate?

Add your base pay to the fringe your employer pays for you, in cash or into plans, and compare the sum with the total. The Department of Labor's Wage and Hour Division takes complaints: 1-866-487-9243, or dol.gov/agencies/whd/contact/complaints.

Source

U.S. Department of Labor, Wage and Hour Division (DOL), Davis-Bacon wage determinations on SAM.gov, as of October 25, 2026. For the row this page leads with:

We read every active Iowa Davis-Bacon wage determination from SAM.gov's own data and check every number with a second, independent read of the same file. DOL prints no total; ours is base plus fringe. How we check · Download every Iowa rate as CSV · Report an error