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Missouri Davis-Bacon wage determination changes, 2026
The U.S. Department of Labor published 68 modifications to 65 of Missouri's Davis-Bacon wage determinations between May 18, 2026 and September 3, 2026 that changed, added or removed a rate. Across them, 2 rates went up, 0 went down, 2,009 rows were added and 111 removed.
From every revision of each WD on SAM.gov, compared row by row (rate identifier and classification) and read twice. 65 of these modifications are dated May 18, 2026, when DOL reissued most WDs. Totals are base plus fringe. A contract keeps the modification in its bid documents, so a later one only reaches new bids. Missouri prevailing wage rates by county
Largest rate changes
The 20 biggest moves in the hourly total (base where the fringe isn't a dollar figure), one row per WD classification.
| Classification | WD | Before | After | Change |
|---|---|---|---|---|
| PIPEFITTER Plumber / Pipefitter · PLUM0562-018 | MO20260080 mod 2, Sep 3, 2026 St Louis City | $82.53 | $84.83 | +$2.30 |
| PLUMBER Plumber / Pipefitter · PLUM0562-019 | MO20260080 mod 2, Sep 3, 2026 St Louis City | $82.53 | $84.83 | +$2.30 |
Every modification, newest first
Each row links the new revision on SAM.gov; "before" links the one it replaced.
September 3, 2026 1 modification
| WD | Construction | Counties | Up | Down | Added | Removed |
|---|---|---|---|---|---|---|
| MO20260080 mod 2 (before) Largest: PIPEFITTER +$2.30 | building | St Louis City | 2 |
August 27, 2026 1 modification
| WD | Construction | Counties | Up | Down | Added | Removed |
|---|---|---|---|---|---|---|
| MO20260001 mod 4 (before) | highway and heavy | Knox, Mississippi, Adair and 112 more | 101 | 99 |
July 30, 2026 1 modification
| WD | Construction | Counties | Up | Down | Added | Removed |
|---|---|---|---|---|---|---|
| MO20260001 mod 3 (before) | highway and heavy | Knox, Mississippi, Adair and 112 more | 12 |
May 18, 2026 65 modifications
| WD | Construction | Counties | Up | Down | Added | Removed |
|---|---|---|---|---|---|---|
| MO20260089 mod 1 (before) | building | St Louis, Washington | 29 | |||
| MO20260088 mod 1 (before) | building | McDonald, Newton | 23 | |||
| MO20260087 mod 1 (before) | building | Lincoln, St Charles, Warren | 27 | |||
| MO20260086 mod 1 (before) | building | Christian, Dallas, Polk, Webster | 23 | |||
| MO20260085 mod 1 (before) | building | Callaway, Cole, Osage | 24 | |||
| MO20260084 mod 1 (before) | building | Howard, Boone | 24 | |||
| MO20260083 mod 1 (before) | building | Bollinger, Cape Girardeau | 24 | |||
| MO20260082 mod 2 (before) | building | Bates, Caldwell, Clay and 3 more | 27 | |||
| MO20260081 mod 2 (before) | building | Andrew, Buchanan, De Kalb | 24 | |||
| MO20260080 mod 1 (before) | building | St Louis City | 27 | |||
| MO20260079 mod 2 (before) | building | Platte | 27 | |||
| MO20260078 mod 1 (before) | building | Moniteau | 24 | |||
| MO20260077 mod 1 (before) | building | Jefferson | 29 | |||
| MO20260076 mod 1 (before) | building | Jasper | 24 | |||
| MO20260075 mod 1 (before) | building | Greene | 24 | |||
| MO20260074 mod 1 (before) | building | Franklin | 27 | |||
| MO20260073 mod 2 (before) | building | Clinton | 27 | |||
| MO20260072 mod 2 (before) | building | Cass | 26 | |||
| MO20260071 mod 1 (before) | residential | Jasper, McDonald, Newton | 12 | |||
| MO20260070 mod 1 (before) | residential | Crawford, Jefferson, Lincoln and 4 more | 34 | |||
| MO20260069 mod 1 (before) | residential | Christian, Dallas, Greene and 2 more | 12 | |||
| MO20260068 mod 1 (before) | residential | Callaway, Cole, Osage, Moniteau | 16 | |||
| MO20260067 mod 1 (before) | residential | Howard, Boone | 16 | |||
| MO20260066 mod 1 (before) | residential | Bates, Caldwell, Cass and 5 more | 26 | |||
| MO20260065 mod 1 (before) | residential | Andrew, Buchanan, De Kalb | 13 | |||
| MO20260064 mod 1 (before) | residential | St Louis City | 15 | |||
| MO20260063 mod 1 (before) | residential | Jackson | 14 | |||
| MO20260062 mod 1 (before) | residential | Franklin | 17 | |||
| MO20260061 mod 1 (before) | residential | Cooper, Gasconade, Montgomery and 7 more | 10 | |||
| MO20260060 mod 1 (before) | residential | Mississippi, St Francois, Ste Genevieve and 19 more | 8 | |||
| MO20260059 mod 1 (before) | residential | Henry, Johnson, Barry and 14 more | 11 | |||
| MO20260058 mod 1 (before) | residential | Knox, Adair, Atchison and 27 more | 11 | |||
| MO20260057 mod 1 (before) | residential | Pettis | 7 | |||
| MO20260056 mod 1 (before) | building | Crawford | 32 | |||
| MO20260033 mod 1 (before) | building | Gasconade, Montgomery, Dent and 3 more | 52 | |||
| MO20260032 mod 2 (before) | building | Henry, Dade, Douglas and 6 more | 49 | |||
| MO20260031 mod 3 (before) | building | Knox, Daviess, Gentry and 21 more | 70 | |||
| MO20260030 mod 1 (before) | building | St Francois, Ste Genevieve, Carter and 7 more | 50 | |||
| MO20260029 mod 1 (before) | building | Barry, Barton, Benton | 52 | |||
| MO20260028 mod 2 (before) | building | Adair, Atchison | 47 | |||
| MO20260027 mod 1 (before) | building | Wright | 25 | |||
| MO20260026 mod 1 (before) | building | Vernon | 25 | |||
| MO20260025 mod 1 (before) | building | Texas | 28 | |||
| MO20260024 mod 1 (before) | building | Stoddard | 28 | |||
| MO20260023 mod 1 (before) | building | Shannon | 29 | |||
| MO20260022 mod 1 (before) | building | Scott | 28 | |||
| MO20260021 mod 1 (before) | building | Ripley | 28 | |||
| MO20260020 mod 1 (before) | building | Ralls | 27 | |||
| MO20260019 mod 1 (before) | building | Pulaski | 31 | |||
| MO20260018 mod 1 (before) | building | Phelps | 30 | |||
| MO20260017 mod 2 (before) | building | Pettis | 27 | |||
| MO20260016 mod 1 (before) | building | Pemiscot | 29 | |||
| MO20260015 mod 1 (before) | building | New Madrid | 28 | |||
| MO20260014 mod 1 (before) | building | Mississippi | 28 | |||
| MO20260013 mod 1 (before) | building | Lawrence | 28 | |||
| MO20260012 mod 2 (before) | building | Johnson | 27 | |||
| MO20260011 mod 1 (before) | building | Dunklin | 30 | |||
| MO20260010 mod 2 (before) | building | Cooper | 28 | |||
| MO20260009 mod 2 (before) | building | Chariton | 26 | |||
| MO20260008 mod 1 (before) | building | Cedar | 27 | |||
| MO20260007 mod 2 (before) | building | Carroll | 23 | |||
| MO20260005 mod 1 (before) | building | Camden | 31 | |||
| MO20260004 mod 1 (before) | building | Butler | 28 | |||
| MO20260002 mod 1 (before) | building | Audrain | 29 | |||
| MO20260001 mod 2 (before) | highway and heavy | Knox, Mississippi, Adair and 112 more | 206 |
Questions about Missouri's Davis-Bacon changes
How often do Davis-Bacon wage rates change in Missouri?
Whenever DOL modifies a wage determination. Between May 18, 2026 and September 3, 2026, DOL published 68 modifications to 65 Missouri wage determinations that changed, added or removed a rate; 65 of them are dated May 18, 2026, when DOL reissued most WDs.
Which Missouri Davis-Bacon rate changed the most in 2026?
PIPEFITTER (plumber / pipefitter) on MO20260080: $82.53 to $84.83 an hour in modification 2, published September 3, 2026, for building construction.
Does a new modification change the rates on my contract?
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)).
Where are the official Missouri wage determinations?
On SAM.gov. Each row on this page links the new revision there and the one it replaced, and every Missouri rate page names its WD and modification.
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